PatchTheCVEwindows server 2012 vulnerabilities and fixes
Recent CVEs affecting windows server 2012, with upgrade or downgrade steps. 3 tracked.
Also searched as: windowsserver2012.
windows server 2012 has 3 tracked vulnerabilities, 0 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 3. Most recent: 2026-10-13. Highest priority: CVE-2026-85880 (score 80/100).
- 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-2026-96222 HIGH 7.4 UPGRADE UPGRADE Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacke
- CVE-2026-85880 HIGH 7.8 EXPLOITED UPGRADE UPGRADE Microsoft Windows Heap-Based Buffer Overflow Vulnerability
FAQ
How do I fix windows server 2012 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 2012 being exploited right now?
Yes: 1 windows server 2012 CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.
Which windows server 2012 CVE should I patch first?
CVE-2026-85880 currently ranks highest (80/100): Microsoft Windows Heap-Based Buffer Overflow Vulnerability.