highclosedpatched
Microsoft Windows: Microsoft Windows Link Following Vulnerability
› Microsoft Windows
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- started
- Sep 8, 2026
- closed
- Sep 8, 2026
- CVEs
- 2
- sources
- 5
## summary
Microsoft Windows Update Stack contains a link following vulnerability that allows a local attacker to escalate privileges locally up to SYSTEM. CISA added CVE-2026-81963, CVE-2026-85880 to the Known Exploited Vulnerabilities catalog on 2026-09-08 based on evidence of active exploitation.
severity: Actively exploited (CISA KEV)
## cve ids[2]
## affected
- See vendor advisory / CISA notes (versions not always listed in KEV feed)
## fixed in
- See vendor advisory linked in sources
## timeline[1]
CISA added CVE-2026-81963, CVE-2026-85880 to the KEV catalog (due 2026-09-22).
## advisories[5]
## notes & caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).
