CVE-2026-62779: Windows Schannel Elevation of Privilege Vulnerability
Use after free in Windows Schannel allows an authorized attacker to elevate privileges locally.
Other sources
Windows Schannel 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 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - 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
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62779?
The severity of CVE-2026-62779 is high, with a score of 7.8 according to the CVSS.
How do I fix CVE-2026-62779?
To mitigate CVE-2026-62779, ensure that all relevant Microsoft Windows updates are applied to your systems.
What type of vulnerability is CVE-2026-62779?
CVE-2026-62779 is classified as a Use After Free vulnerability impacting Windows Schannel.
Who is affected by CVE-2026-62779?
CVE-2026-62779 affects users of Microsoft Windows 11 and Microsoft Windows Server 2025.
Can CVE-2026-62779 be exploited remotely?
CVE-2026-62779 requires local access, meaning an attacker must have physical or remote desktop access to the affected system.