Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What security feature could an attacker bypass by exploiting this vulnerability?
Successful exploitation could allow an authenticated attacker with access to an affected network file share to bypass user-isolation protections and read files belonging to another user.
According to the CVSS metric, attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation requires the affected system to have Windows file protection enabled on an external volume. This configuration is outside an attacker's control.
Security updates
10.0.14393.9688 — https://support.microsoft.com/help/5131291
10.0.17763.9487 — https://support.microsoft.com/help/5131085
10.0.19044.7846 — https://support.microsoft.com/help/5131096
10.0.20348.5870 — https://support.microsoft.com/help/5131090
10.0.22631.7711 — https://support.microsoft.com/help/5131087
10.0.26100.9974 — https://support.microsoft.com/help/5132061
10.0.26100.9911 — https://support.microsoft.com/help/5132043
10.0.26100.33822 — https://support.microsoft.com/help/5131080
10.0.26100.33730 — https://support.microsoft.com/help/5131077
10.0.28000.3501 — https://support.microsoft.com/help/5132059
Vulnerabilities 1
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Medium 5.3
Windows FileCrypt Driver Security Feature Bypass Vulnerability
Improper access control in Windows FileCrypt Driver allows an authorized attacker to bypass a security feature over a network.
Revision history
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#1
Information published.
References
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CVE-2026-113756 Windows FileCrypt Driver Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113756
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss