CVE-2026-65790: Windows Message Queuing Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
Other sources
Windows Message Queuing 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 10.0.19045.7663Patch KB5120249 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7663Patch KB5120249 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7517Patch KB5120240 - 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 10.0.14393.9418Patch KB5120418 - 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 6.3.9600.23338Patch KB5120385 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26280Patch KB5120386 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9168Fixed in 10.0.26200.9106Patch KB5120994 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9168Fixed in 10.0.26200.9106Patch 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 10.0.17763.9121Patch KB5120238
Event History
Frequently Asked Questions
What is the severity of CVE-2026-65790?
The severity of CVE-2026-65790 is rated high with a score of 7.8.
How do I fix CVE-2026-65790?
You can fix CVE-2026-65790 by applying the available security patches from Microsoft.
What impact does CVE-2026-65790 have on systems?
CVE-2026-65790 allows an authorized attacker to elevate privileges locally on affected systems.
Which software versions are affected by CVE-2026-65790?
CVE-2026-65790 affects Microsoft Windows 10, Windows 11, various versions of Windows Server, and Windows 10 21h2.
Is there a workaround for CVE-2026-65790?
There are no specific workarounds for CVE-2026-65790, and applying the patch is the recommended solution.