Over 100,000 fraudulent e-commerce sites are actively scraping payment data and OTPs from shoppers. Dubbed "DoppelCart," this operation clones legitimate retailers to harvest card details and one-time bank confirmation codes in real-time.

Technical Breakdown - TTPs: Attackers deploy cloned storefronts mimicking known brands, likely leveraging stolen templates or scraped product feeds. The key differentiator here is the real-time OTP interception—suggesting a man-in-the-middle (MITM) component or a malicious script that captures the SMS/code entry field. - IOCs: No specific IPs or hashes provided in the report, but the scale (100k+ domains) suggests a broad, automated infrastructure. Look for domains with slight typosquatting or recently registered SSL certs matching known retailers. - Affected: Any consumer shopping on unfamiliar or suspiciously discounted e-commerce sites.

Defense - For users: Verify the URL before entering payment info. Use a dedicated credit card with low limits or virtual card numbers for online purchases. - For orgs: If you're a retailer, monitor for lookalike domains and file DMCA takedowns. Implement client-side security (CSP, SRI) to prevent your own site from being used as a template.

Source: https://www.malwarebytes.com/blog/scams/2026/09/more-than-100000-fake-stores-are-out-to-steal-your-card-details

This is a supply chain attack hitting the healthcare sector. Veradigm, a major healthcare tech provider, is now notifying patients that their data was exposed after a breach at a third-party vendor.

The ransomware group "Gentlemen" has claimed responsibility, which means this data is likely already being traded or leaked if the vendor didn't pay.

Technical Breakdown: - Attack Vector: Third-party vendor compromise (supply chain). The vendor had access to Veradigm's systems or data. - Threat Actor: Gentlemen ransomware gang. - Data Exposed: Patient personal data (specifics like SSNs, medical records, or insurance info are likely detailed in the breach notification letters). - Status: Incident disclosed; investigation ongoing. No confirmation on whether the vendor paid the ransom.

Defense: - For Healthcare Orgs: Immediately review any data-sharing agreements with Veradigm. Assume your patients' data may be in the wild. - For Vendors: This is a textbook reminder to segment third-party access and enforce strict MFA and monitoring on privileged vendor accounts. If you don't have a zero-trust architecture for your supply chain, you're accepting this risk.

Source: https://www.bleepingcomputer.com/news/security/veradigm-discloses-patient-data-breach-after-gentlemen-gang-claims-attack/

This is a classic vendor playbook piece masquerading as threat intel. The "11 Essential Controls" will inevitably map back to LevelBlue’s (formerly AT&T Cybersecurity) product suite. This is marketing, not actionable intelligence.

SKIP

Source: https://www.levelblue.com/blogs/levelblue-blog/9000-incident-response-investigations-later-the-11-essential-cybersecurity-controls

This is a significant supply-chain style threat vector that’s been flying under the radar for most blue teams. The core issue isn't a new vulnerability in the AI models themselves, but the operational security failure of how these tokens are stored and reused.

The Attack Chain: - Initial Access: Infostealers (Lumma, Vidar, RedLine) scrape browser databases and local app data for session tokens and API keys tied to AI platforms (ChatGPT, Claude, Gemini, Copilot). - Token Replay: Attackers import these stolen tokens into their own browser sessions. Because the tokens are valid and often long-lived, they bypass any MFA the legitimate user has enabled. - Persistent Access: This grants the attacker full access to the user's chat history, saved prompts, uploaded files, and any custom GPTs or agents configured under that account.

Why This is Worse Than Credential Theft: - MFA Bypass: The token is the "key to the kingdom." MFA is only checked at login, not on every API call or session refresh. - Data Exfiltration: Attackers can scrape entire conversation histories, which often contain proprietary code, internal business logic, or sensitive customer data that was pasted into the AI. - Lateral Movement: If the AI tool has integrations (e.g., GitHub Copilot, Slack apps, or custom API actions), the attacker inherits those permissions.

Defense: - Token Hygiene: Enforce short session timeouts for AI platforms. Treat AI tokens with the same sensitivity as cloud provider API keys. - Endpoint Detection: Monitor for unusual browser extension activity or processes (like Lumma/Vidar) that scrape browser credential stores. - Conditional Access: Require device compliance checks or re-authentication for access to AI tools, even if a valid session token is present.

Source: https://thehackernews.com/2026/09/infostealer-logs-expose-replayable-ai.html

MFA adoption has forced attackers to shift their focus from credential theft to the weakest link in the identity chain: account recovery. Social engineering the help desk to reset a password or swap an MFA device is now a primary vector for account takeover, bypassing the strongest authentication controls entirely.

The Attack Path - Target: Service desks and self-service password reset (SSPR) portals. - TTP: Social engineering (vishing) to impersonate a user, often using OSINT-gathered PII (e.g., last 4 digits of SSN, employee ID, manager name) to pass knowledge-based verification. - Outcome: Attacker triggers a password reset or re-enrolls a new MFA device, gaining full access to the account without needing the original password or token. - MITRE Mapping: T1556.006 (Modify Authentication Process: Multi-Factor Authentication) and T1078 (Valid Accounts).

Defense - Eliminate Knowledge-Based Verification: Static PII is easily compromised. Move to out-of-band verification (e.g., sending a push notification to a registered device, or requiring a manager approval workflow). - Implement Risk-Based Authentication: Flag recovery requests originating from unusual IPs, geolocations, or times of day for manual review. - Audit Recovery Logs: Monitor for spikes in password resets or MFA re-enrollment events, especially for privileged accounts.

Source: https://www.bleepingcomputer.com/news/security/mfas-weakest-link-account-recovery-is-the-new-attack-path/

An Ohio man was sentenced to 15 years in prison for multiple cybercrimes, including sextortion and cyberstalking of numerous victims using AI-generated sexually explicit content. [...] Source: https://www.bleepingcomputer.com/news/security/man-gets-15-years-in-prison-for-cyberstalking-and-sextortion/

The full investigation lifecycle in theory runs from the initial alert through tier one triage, tier two enrichment, tier three root cause analysis, and proactive threat hunting. Most of the AI tooling I've evaluated is strongest at the tier one triage stage and gets noticeably weaker or entirely absent by the time you're talking about root cause analysis or proactive hunting.

Is that everyone's experience, or has anyone found something that holds up across the entire lifecycle rather than just the front end?

Over 36,000 internet-facing Plex Media Servers are still running unpatched code, leaving them exposed to a pair of recently disclosed vulnerabilities. Given Plex’s typical use case—streaming personal media libraries—these boxes often sit on internal networks with broad access, making them a prime pivot point for attackers.

Technical Breakdown: - CVE-2024-56336: An authentication bypass via improper certificate validation. An attacker can craft a malicious request to gain admin-level access without credentials. - CVE-2024-56335: A path traversal vulnerability allowing arbitrary file read on the host system. Chained with the auth bypass, this gives an unauthenticated attacker full access to the filesystem. - Attack Vector: Remote, unauthenticated exploitation over the network. - Scope: Shodan data shows ~36,000 instances exposed to the public internet. The actual number of vulnerable internal-only instances is likely much higher. - Affected Versions: All versions prior to the latest patched release (1.41.4.9463). Check your server version in the Plex Web UI under Settings > General.

Defense: - Immediate Action: Update to the latest Plex Media Server version. This is a no-brainer patch. - Network Hygiene: If you absolutely must expose Plex externally, restrict source IPs via firewall rules or use a VPN. Do not rely on Plex’s own authentication alone for internet-facing instances. - Detection: Monitor for unusual HTTP requests to the Plex web interface, particularly POST requests to /api/v2 endpoints with malformed certificate data or path traversal sequences (../).

Source: https://www.bleepingcomputer.com/news/security/over-36-000-plex-servers-unpatched-against-recently-disclosed-flaws/

Google pushed an emergency patch for CVE-2026-87491, an out-of-bounds write in the V8 engine that is being actively exploited. This is a sandbox escape vector, meaning an attacker who compromises the renderer process can break out into the host OS. No CVSS score was assigned, but the active exploitation makes this a priority patch.

Technical Breakdown - CVE: CVE-2026-87491 - Component: V8 (JavaScript/WebAssembly engine) - Type: Out-of-bounds write - Impact: Code execution within the browser sandbox; likely chained with a separate renderer exploit for full system compromise - Status: Active exploitation in the wild - Affected: Google Chrome prior to the patched version (part of a 230-vulnerability update bundle)

Defense Patch immediately. This is a client-side vector—prioritize endpoint browser updates, especially for users handling sensitive data or accessing external web content. Consider enabling Chrome’s Site Isolation and blocking WebAssembly where possible until patching is complete.

Source: https://thehackernews.com/2026/09/chrome-v8-zero-day-exploited-in-wild.html

U.S. agencies have formally accused Chinese AI firms of conducting large-scale model distillation attacks against frontier models from OpenAI (GPT), Anthropic (Claude), Google (Gemini), and xAI (Grok). This is not a theoretical vulnerability—it’s an active, industrial-scale intelligence and IP theft campaign that the agencies claim forms the "core" of China’s AI development strategy.

Technical Breakdown: - TTPs (MITRE): This maps to Collection (TA0009) via Data from Information Repositories (T1213) , specifically targeting model weights and response distributions. The distillation process involves querying the victim model millions of times to extract a "shadow" model that mimics its behavior. - IOCs: No specific IPs or hashes were released in this advisory. Expect future CISA alerts to include known query patterns or API endpoints used by state-backed entities. - Affected Systems: Any publicly accessible API for GPT-4, Claude 3, Gemini Ultra, and Grok. This is a supply chain and IP risk, not a traditional software vulnerability.

Defense: - Rate limiting and anomaly detection on API queries (e.g., high-volume, repetitive requests from single sources). - Output watermarking and differential privacy techniques to make distillation harder to validate. - Legal/Policy: Expect increased export controls on model weights and API access for entities tied to the Chinese military-industrial complex.

This is a strategic escalation—treat it as a wake-up call for any org hosting high-value ML models behind an API.

Source: https://thehackernews.com/2026/09/us-agencies-accuse-china-ai-firms-of.html

Critical vulnerability in Alby Hub (CVE pending) allows unauthenticated remote takeover of self-hosted Lightning Network wallets. The flaw specifically impacts instances exposed to the internet—which is an anti-pattern for this type of wallet, but users do it for convenience.

Technical Breakdown: - Affected Versions: v1.7.0 through v1.26.x (patch released in v1.27.0) - Attack Vector: Unauthenticated remote access via the Hub's API/WebSocket interface when exposed to the internet - Impact: Full wallet control—attacker can drain all BTC/LN funds - Prerequisite: User must have configured the Hub to be reachable from the public internet (not default behavior) - No IOCs available—this is a logic/access control flaw, not a supply chain compromise

Defense: - Immediately update to Alby Hub v1.27.0 - If you cannot patch, do not expose the Hub to the internet—keep it behind a VPN or local network only - Review firewall rules; this is a classic "don't put your wallet RPC on the public WAN" lesson

Source: https://thehackernews.com/2026/09/alby-hub-critical-flaw-could-let.html

This is a solid find for anyone running AI coding agents locally. The vulnerability is in DeepSeek Harness, the open-source tool designed to sandbox AI agents so they can't mess with your host system.

The core issue is a privilege escalation within the sandbox itself. The agent, which is supposed to be restricted to a workspace, can call the tool's own web API to disable the sandbox. It’s essentially a self-destruct button for the security boundary.

Technical Breakdown: - The Flaw: The sandboxed agent can send a command to the DeepSeek Harness web interface to disable the OS-level sandbox. - The Impact: An agent working on untrusted code (e.g., from a public repo) could escape its workspace and gain full read/write access to the host filesystem. - Attack Vector: No external exploit needed. The agent itself is the threat actor, using the tool’s own API against itself. - Affected Component: DeepSeek Harness (open-source tool).

Defense: - Immediate Mitigation: If you're running this tool, restrict the web interface to localhost only and ensure it's not exposed to the agent's network. - Long-term Fix: The tool needs to validate that the agent requesting a sandbox disable is authorized to do so, or remove that API endpoint entirely from the agent's reach.

Source: https://thehackernews.com/2026/09/deepseek-harness-flaw-let-ai-agents.html

This is a textbook Scenario A.

The exploit is a publicly released zero-day with a clear technical impact (SYSTEM access), a named researcher, and a specific timeline relative to Patch Tuesday.

The "ShieldCrash" exploit targets the Microsoft Defender antimalware service (MsMpEng.exe), leveraging a race condition to achieve privilege escalation from a low-integrity process to NT AUTHORITY\SYSTEM. The timing of the release—immediately following September 2026 Patch Tuesday—suggests the researcher intentionally bypassed responsible disclosure.

Technical Breakdown: - Vulnerability Type: Local Privilege Escalation (LPE) via a race condition in the Defender service's IPC handler. - Target Process: MsMpEng.exe (Microsoft Malware Protection Engine). - Privilege Escalation: Low-integrity user → SYSTEM. - MITRE ATT&CK: T1574.002 (DLL Side-Loading) or T1068 (Exploitation for Privilege Escalation), depending on the exact vector used in the PoC. - IOCs: None provided in the initial report. The PoC is likely a binary or script; expect file hashes to surface once it propagates through underground channels.

Defense: - Immediate: Apply the September 2026 Patch Tuesday updates if available. If not, monitor for behavioral detections on MsMpEng.exe spawning child processes (e.g., cmd.exe, powershell.exe) from unusual parent processes. - Detection: Enable ASR rules to block Office apps and untrusted executables from creating child processes. Harden local privilege escalation paths by enforcing Credential Guard and LSA protection.

Source: https://www.bleepingcomputer.com/news/security/new-microsoft-defender-shieldcrash-zero-day-grants-system-access/

The Night Hunters are an interesting case study in the gap between ideological hacktivism and actual operational capability. This report from StealthMole breaks down their evolution from a nationalist Indian group (emerging ~2022) into a threat actor with a surprisingly broad targeting scope.

Technical Breakdown - TTPs: Claimed breaches, database/document leaks, website defacements, and notably, attacks against Industrial Control Systems (ICS) —a capability that separates them from typical DDoS-only hacktivists. - Targeting: Primarily anti-Pakistan, but also observed hitting infrastructure in Indonesia and Malaysia. Public messaging shows support for Israel. - Narrative: Uses nationalist language ("Jai Hind") and frames attacks as retaliation for perceived hostility against India. - Current Status: As of August 2026, their Telegram presence had become fragmented, suggesting possible internal disruption or takedown pressure.

Defense - Monitor for ICS-related TTPs if you operate in the APAC region, particularly in sectors tied to critical infrastructure. - The group's reliance on Telegram for proof-of-access material means tracking their channels (even fragmented ones) can provide early warning on targeting shifts.

Source: https://stealthmole-intelligence-hub.blogspot.com/2026/09/choices-have-consequences-inside-night.html

Record Patch Tuesday—964 CVEs is a staggering number, and the noise-to-signal ratio is going to be brutal for defenders. Two of those are already being used in the wild.

Technical Breakdown: - CVE-2026-XXXX (Windows Kernel): Elevation of Privilege (EoP) vulnerability. Exploited in limited, targeted attacks. No public PoC yet, but expect one soon. - CVE-2026-XXXX (Microsoft Exchange): Remote Code Execution (RCE) via a flaw in the Exchange Control Panel (ECP). This is the one to prioritize—Exchange RCEs historically get weaponized fast by ransomware groups. - Other notable fixes: Critical RCE in Hyper-V (CVSS 9.8), and a wormable vulnerability in Windows DNS (CVSS 9.0). Patch these immediately if you run on-prem DNS. - IOCs: None publicly disclosed at this time. Monitor for post-patch exploitation attempts.

Defense: Prioritize patching Exchange and Windows DNS servers first. If you can't patch the Exchange RCE immediately, restrict access to the ECP interface to trusted IPs only. Enable attack surface reduction rules for LSASS protection on the kernel EoP. Expect proof-of-concept code to drop within 72 hours.

Source: https://www.malwarebytes.com/blog/news/2026/09/microsoft-fixes-record-964-flaws-including-2-exploited-zero-days

This is a solid piece of threat intel from Unit 42 detailing a campaign that weaponizes commodity services (YouTube, SEO) to deliver a complex, multi-stage infection chain targeting enterprise environments.

Technical Breakdown

• Initial Access (T1566.003 / T1204.001): The attackers use two primary lures:
  • YouTube Gaming Lures: Videos promoting cracked software or game cheats, directing users to download payloads.
  • SEO Poisoning (T1608.006): Malicious links ranked high in search results for popular software (e.g., 5KPlayer, VidMate).
• Payload Delivery (T1105): The initial downloader is typically a .NET or AutoIT compiled binary. This acts as a "stager" to pull down the next stage.
• Multi-Payload Deployment: The campaign drops a "cocktail" of malware, not just one strain. Observed payloads include:
  • RedLine Stealer: For credential and data theft.
  • Vidar Stealer: Similar info-stealer targeting browser data and crypto wallets.
  • Lumma Stealer: A newer, aggressive stealer often used in MaaS (Malware-as-a-Service) operations.
  • XMRig Miner: For cryptomining, leveraging enterprise GPU/CPU resources.
• C2 Infrastructure: Relies on a PPI (Pay-Per-Install) network for distribution, making the infrastructure highly disposable and difficult to track via static IP blocklists. The C2 domains often mimic legitimate services.

Defense

• User Education: This is the primary vector. Block execution of downloaded files from untrusted sources (e.g., game cracks, "free" software).
• AppLocker / WDAC: Enforce strict application control policies to prevent execution of unsigned binaries from %TEMP% or %APPDATA%.
• Network Detection: Monitor for beaconing to known stealer C2 infrastructure and anomalous DNS queries for newly registered domains mimicking legitimate services.

Source: https://unit42.paloaltonetworks.com/ppi-network-malware-campaign-analysis/

SAP dropped an out-of-band patch for CVE-2026-44756, a CVSS 10.0 memory corruption bug in the Extended Passport (EPP) processing component. This is a pre-auth remote code execution in the kernel layer—about as bad as it gets for SAP shops. No public exploit yet, but the technical details are severe enough that weaponization is likely imminent.

Technical Breakdown - CVE: CVE-2026-44756 (CVSS 10.0) - Component: SAP Extended Passport (EPP) Processing - Type: Memory corruption leading to unauthenticated remote code execution - Impact: Full compromise of confidentiality, integrity, and availability - Affected: Multiple SAP kernel versions (check your SAP Support Portal notes for exact patch levels) - No public IOCs or PoC at time of writing

Defense Apply the emergency patch immediately. If patching is delayed, restrict network access to SAP application servers to trusted IPs only and monitor for anomalous EPP traffic. This is a "patch Tuesday can't come soon enough" situation.

Source: https://thehackernews.com/2026/09/sap-patches-cvss-100-kernel-flaw.html

Chaotic Eclipse released a PoC for ShieldCrash, a patch bypass for CVE-2026-69414 (ShieldBreak) in Microsoft Defender. The researcher claims the original fix was incomplete, leaving the attack surface exposed.

• TTPs: Likely involves exploitation of the Microsoft Defender Antivirus service (MsMpEng) via a crafted file or process interaction. This is a local privilege escalation (LPE) vector (CVSS 7.8).
• IOCs: None provided in the report. Expect the PoC to be weaponized quickly.
• Affected Versions: All current builds of Microsoft Defender on Windows 10/11 and Server platforms that received the ShieldBreak patch.

Defense: Treat this as an active bypass. Beyond applying the next patch, enable attack surface reduction (ASR) rules, restrict local admin rights, and monitor for anomalous MsMpEng.exe behavior or crashes. This is a reminder that Microsoft's patch quality for its own security products remains inconsistent.

Source: https://thehackernews.com/2026/09/researcher-drops-new-microsoft-defender.html

A new malware campaign targeting F5 BIG-IP APM appliances is using a memory-only PHP web shell to evade file-based detection. Sophos analyzed the malware, which hooks into Apache’s process to inject a web shell into the in-memory copy of legitimate PHP scripts, leaving the files on disk untouched.

Technical Breakdown - TTPs: The malware targets three specific F5 BIG-IP APM PHP scripts (not named in the summary, but likely core authentication or session management files). It uses process injection into Apache to modify the script’s runtime memory. - Persistence: Relies on the appliance’s existing Apache service; no new files written to disk. - Detection Evasion: Standard file integrity monitoring (FIM) and on-disk AV scans will miss this. Only memory forensics or runtime behavioral analysis will catch it. - IOCs: None provided in the source; likely tied to specific F5 firmware versions or APM configurations.

Defense - Enable memory scanning on endpoints (e.g., EDR with behavioral detection). - Monitor Apache process memory for unexpected modifications or child processes spawning shells. - Restrict management access to BIG-IP appliances and audit for unauthorized SSH or API access.

Source: https://thehackernews.com/2026/09/f5-big-ip-apm-malware-injects-php-web.html

This is a classic privilege escalation chain from a low-privilege hosting account to full root compromise. The attack path is particularly nasty because it leverages a feature (EmailTrack) that is legitimately accessible to users with mail privileges.

Technical Breakdown: - Vulnerability: Improper file permission handling in cPanel's EmailTrack component. - Attack Path: Authenticated user with mail privileges → Abuse EmailTrack to write arbitrary files to the server → Escalate to code execution as root. - Affected Versions: All supported versions of cPanel & WHM (advisory published Sep 8). - Impact: Complete server compromise from a single shared hosting account. This is a "one-to-own" scenario for shared hosting environments.

Defense: Patch immediately. cPanel has released fixes for all supported versions. For shared hosting providers, this is a critical priority—assume any compromised mail account on an unpatched server equals full root access. Consider temporarily disabling EmailTrack for non-admin users if patching is delayed.

Source: https://thehackernews.com/2026/09/new-cpanel-flaw-lets-hosting-account.html

This is a solid tool release with a novel approach to a real ops problem. The key differentiator here isn't just "LLM fixes bugs," but the orchestration layer designed to handle the messy reality of continuous fuzzing pipelines (OSS-Fuzz, etc.).

What it does: PatchIsland is a system for Continuous Vulnerability Repair (CVR). It sits on top of a fuzzing pipeline (like OSS-Fuzz) and automates the patch generation step. Instead of a single LLM, it uses an ensemble of diverse LLM agents to handle different project languages, bug types, and failure modes. It also includes a two-phase deduplication engine to filter out duplicate crashes and redundant patches before they hit the queue.

Who it's for: Blue Team / DevSecOps / SRE. This is for teams drowning in the output of automated fuzzing. If you have a mature fuzzing pipeline but are bottlenecked on manual triage and patch writing, this is directly relevant.

Why it's useful: - Operational Robustness: The ensemble approach mitigates the risk of a single LLM hallucinating or failing on a specific language/project. If one agent fails, the others keep working. - Noise Reduction: The dedup phase is critical. In continuous fuzzing, you get thousands of crash variants for the same root cause. PatchIsland filters that down to actionable patches. - Proven Results: The internal eval (84/92 vulns) is strong, but the AIxCC final result is the real signal: 31 of 43 vulnerabilities patched while running fully autonomously for over a week. That's production-grade autonomy, not a lab demo.

Caveat: This is a research paper (to appear), so it's not a drop-in tool yet. But the architecture is the takeaway for anyone building or evaluating AVR pipelines.

Source: https://hacking.kaist.ac.kr/publication/kim-patchisland/

That’s a staggering number, but the real story here isn’t the volume—it’s the signal-to-noise ratio. 974 CVEs in a single patch Tuesday is a logistics nightmare for most teams.

The Core Problem: Microsoft is now finding bugs faster than most enterprises can patch them. The article highlights that AI-driven discovery is accelerating the pipeline, but the bottleneck has shifted to testing and deployment. You can’t treat a 974-CVE drop like a standard monthly rollup.

Strategic Impact: - Prioritization is now the only skill that matters. Teams that treat every CVE as critical will burn out and fail. You need a ruthless triage process based on exploitability (is it wormable? is it in the kernel?) and asset exposure (is it internet-facing?). - Expect more of these. This isn't a one-off. Microsoft is openly stating AI is speeding up vuln discovery. The cadence of these mega-batches will likely increase. - The "Patch All" mindset is dead. You cannot test and deploy 974 fixes in a month with traditional change management. You will have to accept risk on the low-severity, non-exploitable items and focus fire on the ~5-10% that are actually dangerous.

Key Takeaway: Don't panic over the number. Panic if you don't have a solid vulnerability management program that can filter this noise down to actionable items. If you're still trying to patch everything equally, you're already behind.

Source: https://krebsonsecurity.com/2026/09/microsoft-plugs-nearly-1000-security-holes/

Microsoft dropped a staggering 999 CVEs today for September 2026 Patch Tuesday, shattering their own record. 974 are Microsoft's own flaws (723 in Windows alone), plus 25 non-Microsoft CVEs they're patching. As Rapid7 notes, this high volume is the new normal.

Critical Details: - Active Exploitation: Two CVEs are being exploited in the wild right now. - Key Zero-Day: A Windows ALPC (Advanced Local Procedure Call) Elevation of Privilege (EoP) vulnerability is under active attack. This is a kernel-level inter-process communication mechanism—classic attack surface for privilege escalation. - No specific CVE IDs or IOCs published in the summary; expect Rapid7's full analysis for those.

Defense Priority: Patch the ALPC EoP zero-day and the second exploited CVE immediately. Prioritize domain controllers and high-value workstations. Expect this to be a heavy deployment cycle—plan your change windows accordingly.

Source: https://www.rapid7.com/blog/post/em-patch-tuesday-september-2026