CVE-2026-69953: Windows Overlay Filter Elevation of Privilege Vulnerability
Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
Other sources
Windows Overlay Filter 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 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized to access the affected Windows system locally and have low-level privileges. It is not described as remotely exploitable or requiring user interaction.
Which systems should be prioritized for remediation?
Prioritize affected Windows 10, Windows 11, and Windows Server systems where untrusted or lower-privileged users can log on locally. Successful exploitation can result in elevated privileges with high impact to confidentiality, integrity, and availability.
What can be done while a security update is pending?
Limit local access by untrusted users and restrict low-privileged accounts from interactive access to affected systems where operationally feasible. The provided information does not identify a configuration workaround or mitigation specific to the Windows Overlay Filter.
How can defenders determine whether they are affected?
Identify systems running the listed Windows 10, Windows 11, Windows Server 2012, 2012 R2, 2016, 2019, 2022, or 2025 products, then review the Microsoft security guidance for CVE-2026-69953 to determine applicable update status. The provided information does not include affected build numbers or detection indicators.