1. Top Action Item

Patch the five Flax Typhoon–exploited vulnerabilities that CISA added to its Known Exploited Vulnerabilities (KEV) catalog this week, ahead of the October 11 federal remediation deadline. CISA made the KEV additions on Thursday after a China-linked threat actor (Flax Typhoon) abused the flaws, and the highest-rated is CVE-2015-3306 (CVSS 10.0), an improper access control issue in ProFTPD. If your organization runs ProFTPD or any of the other four affected products, treat this as this week's top priority and remediate before the deadline; the full list of the remaining four is in the linked advisory.


2. Exploited This Week

Flax Typhoon KEV additions — CVE-2015-3306 (and four others)

AhsayCBS backup utility — CVE-2026-105133


3. Critical Patch Roundup

AnyDesk (Linux)

Microsoft Windows

AWS Bedrock AgentCore ("AgentCorruption")

Adobe, Apple, Foxit Reader (Cisco Talos disclosures)


4. Home / SOHO Impact


5. Enterprise Impact


6. What To Patch First

  1. ProFTPD + the other four Flax Typhoon flaws — CVE-2015-3306 and four others (exploited; CISA KEV, Oct 11 deadline)
  2. AhsayCBS backup utility — CVE-2026-105133 and a second flaw (exploited in the wild; web shells/miners)
  3. AnyDesk for Linux 8.0.3+ (public working pre-auth root exploit)
  4. Microsoft Windows — this week's MSRC updates (RCE in DHCP Server, Netlogon, NTFS, Media Foundation, LLTD; widely deployed)
  5. AWS Bedrock AgentCore — patched release (fleet-takeover risk; confirm exposure)
  6. Adobe / Apple / Foxit Reader — current vendor-patched releases (Talos-disclosed, now patched)

Sources