CVE-2026-20849
Windows Kerberos Elevation of Privilege Vulnerability
7.5CVSSHIGH
Description
Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:HAttack ComplexityHigh
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
and 57 more affected products View all →
Exploitability
Official Patch Available
References
Timeline
Published
Jan 13, 2026
Last Updated
Jan 15, 2026
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