CVE-2026-62766: Windows Kerberos Elevation of Privilege Vulnerability
Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.
Other sources
Windows Kerberos Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2704Patch KB5121000 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9168Fixed in 10.0.26000.9106Patch KB5120994 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62766?
CVE-2026-62766 has a severity rating of high with a score of 7.
How do I fix CVE-2026-62766?
To fix CVE-2026-62766, ensure that you apply the latest security patches provided by Microsoft for your Windows operating system.
What software is affected by CVE-2026-62766?
CVE-2026-62766 affects Microsoft Windows 11, Microsoft Windows Server 2025, and Microsoft Windows Kerberos.
What type of vulnerability is CVE-2026-62766?
CVE-2026-62766 is classified as a double free vulnerability that can lead to elevation of privilege.
Can CVE-2026-62766 be exploited remotely?
CVE-2026-62766 requires local access, as it can only be exploited by an authorized attacker on the system.