Microsoft fixes record 1,411 flaws in October 2026 Patch Tuesday

Microsoft released its October 2026 Patch Tuesday updates, fixing a record 1,411 vulnerabilities, including three zero-days: one actively exploited and two publicly disclosed. Seventy flaws are rated Critical, 57 of them remote code execution. Windows 11 24H2 Home and Pro and Windows 10 Enterprise LTSB 2016 reached end of support.

• 1,411 flaws fixed, including 70 Critical and 317 RCE bugs
• Actively exploited CVE-2026-96951 bypasses Mark of the Web
• CVE-2026-108398 in .NET bypasses Windows Defender Application Control
• Windows 11 24H2 Home and Pro no longer receive updates