Windows Server vulnerabilities and fixes

CVEs that mention Windows Server, ranked by priority. 9 tracked.

Windows Server has 9 tracked vulnerabilities, 0 critical and 2 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 9. Most recent: 2026-10-13. Highest priority: CVE-2026-85880 (score 80/100).

CVE-2026-85880 HIGH 7.8 EXPLOITED UPGRADE UPGRADE Microsoft Windows Heap-Based Buffer Overflow Vulnerability
CVE-2026-81963 HIGH 7.8 EXPLOITED UPGRADE UPGRADE Microsoft Windows Link Following Vulnerability
CVE-2026-96222 HIGH 7.4 UPGRADE UPGRADE Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacke
CVE-2026-83862 HIGH 8.8 UPGRADE UPGRADE Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjac
CVE-2026-69733 HIGH 7.8 UPGRADE UPGRADE Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
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-2026-69673 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-2026-108132 HIGH 7.0 UPGRADE UPGRADE Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.

FAQ

How do I fix Windows Server 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 Server being exploited right now?

Yes: 2 Windows Server CVEs are on the CISA Known Exploited Vulnerabilities list, so patch those first.

Which Windows Server CVE should I patch first?

CVE-2026-85880 currently ranks highest (80/100): Microsoft Windows Heap-Based Buffer Overflow Vulnerability.

Newest Windows Server CVEs

CVE-2026-83862 HIGH 8.8 2026-10-13: Use after free in Windows Network Load Balancing allows an unauthorized attacker to execut
CVE-2026-69733 HIGH 7.8 2026-10-13: Untrusted search path in Windows Update allows an authorized attacker to elevate privilege
CVE-2026-69718 HIGH 7.8 2026-10-13: Improper neutralization of special elements used in a command ('command injection') in Win
CVE-2026-69673 HIGH 7.8 2026-10-13: Improper link resolution before file access ('link following') in Windows Update allows an
CVE-2026-108132 HIGH 7.0 2026-10-13: Double free in Windows Kerberos allows an authorized attacker to elevate privileges locall

Live from the NVD (last 120 days)

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