PatchTheCVEwindows 11 26h1 vulnerabilities and fixes
Recent CVEs affecting windows 11 26h1, with upgrade or downgrade steps. 10 tracked.
windows 11 26h1 has 10 tracked vulnerabilities, 0 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 10. Most recent: 2026-10-13. Highest priority: CVE-2026-81963 (score 65/100).
- CVE-2026-69673 HIGH 7.8 UPGRADE UPGRADE Improper link resolution before file access ('link following') in Windows Update allows an authorized attacker
- CVE-2026-69718 HIGH 7.8 UPGRADE UPGRADE Improper neutralization of special elements used in a command ('command injection') in Windows Update allows a
- CVE-2026-69733 HIGH 7.8 UPGRADE UPGRADE Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
- CVE-2026-108135 HIGH 7.0 UPGRADE UPGRADE Improper link resolution before file access ('link following') in Windows Backup Engine allows an authorized a
- CVE-2026-62772 HIGH 7.8 UPGRADE Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized
- CVE-2026-62799 HIGH 7.8 UPGRADE Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
- CVE-2026-72971 MEDIUM 5.5 UPGRADE Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver
- CVE-2026-62775 MEDIUM 5.5 UPGRADE Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized att
- CVE-2026-85790 MEDIUM 5.9 UPGRADE UPGRADE Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
- CVE-2026-81963 HIGH 7.8 EXPLOITED UPGRADE UPGRADE Microsoft Windows Link Following Vulnerability
FAQ
How do I fix windows 11 26h1 vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is windows 11 26h1 being exploited right now?
Yes: 1 windows 11 26h1 CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.
Which windows 11 26h1 CVE should I patch first?
CVE-2026-81963 currently ranks highest (65/100): Microsoft Windows Link Following Vulnerability.