CVE-2026-69597: Windows HTTP.sys Elevation of Privilege Vulnerability
Use after free in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.
Other sources
Windows HTTP.sys 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 10.0.22631.7582Patch KB5122880 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9445Patch KB5124008
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running Microsoft Windows 11 or Microsoft Windows Server 2025 with the affected Windows HTTP.sys component are identified as affected. Exploitation requires an authorized attacker, so the attacker must already have valid access.
What conditions must an attacker meet to exploit it?
The attacker needs low privileges and network access, and exploitation requires user interaction. The attack complexity is high, indicating additional conditions or precise exploitation steps are required.
What is the potential impact if exploitation succeeds?
Successful exploitation can elevate the attacker's privileges. The reported impact includes high confidentiality, integrity, and availability consequences.