CVE-2026-61349: Windows Work Folder Service Elevation of Privilege Vulnerability
Use after free in Windows Work Folder Service allows an authorized attacker to elevate privileges locally.
Other sources
Windows Work Folder Service 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 10.0.17763.9115Patch KB5120238 - Upgrade
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Fixed in 10.0.19044.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
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Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.19045.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
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Fixed in 10.0.28000.2704Patch KB5121000 - Upgrade
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Fixed in 10.0.22631.7517Patch KB5120240 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26000.9106Patch KB5120994 - Upgrade
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Fixed in 6.3.9600.23337Patch KB5120386 - Upgrade
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Fixed in 10.0.26200.9168Fixed in 10.0.26100.9106Patch KB5120994
Event History
Frequently Asked Questions
What is the severity of CVE-2026-61349?
CVE-2026-61349 has a high severity rating of 7.8.
How do I fix CVE-2026-61349?
To fix CVE-2026-61349, ensure that your Microsoft Windows operating system is updated with the latest security patches from Microsoft.
What systems are affected by CVE-2026-61349?
CVE-2026-61349 affects Microsoft Windows 10, Windows 11, and various versions of Windows Server from 2012 R2 to 2025.
Can CVE-2026-61349 be exploited remotely?
CVE-2026-61349 cannot be exploited remotely as it requires local access for an authorized attacker to elevate privileges.
What type of vulnerability is CVE-2026-61349?
CVE-2026-61349 is classified as a Use After Free vulnerability that can lead to an elevation of privilege.