Windows FileCrypt Driver: Local information disclosure
Summary
An improper access control flaw in the Windows FileCrypt Driver allows an authorized local user to disclose information. The attacker needs valid low-privilege access to the system, and the attack complexity is high. Only confidentiality is affected; integrity and availability are not. Microsoft has released fixes in the November 2026 updates.
Affected
- Windows 10 Version 1607 (before 10.0.14393.9688)
- Windows 10 Version 1809 (before 10.0.17763.9487)
- Windows 10 Version 21H2 (before 10.0.19044.7846)
- Windows 10 Version 22H2 (before 10.0.19045.7846)
- Windows 11 Version 23H2 (before 10.0.22631.7711)
- Windows 11 Version 24H2 (before 10.0.26100.9974)
- Windows 11 Version 25H2 (before 10.0.26200.9974)
- Windows 11 Version 26H1 (before 10.0.28000.3501)
- Windows 11 Version 26H2 (before 10.0.26300.9974)
- Windows Server 2016, including Server Core (before 10.0.14393.9688)
- Windows Server 2019, including Server Core (before 10.0.17763.9487)
- Windows Server 2022 (before 10.0.20348.5870)
Fixed in
- Install the November 2026 security updates.
- Windows 11 23H2: KB5131087 (build 22631.7711).
- Windows 11 24H2, 25H2 and 26H2: KB5132061 (builds 26100.9974, 26200.9974, 26300.9974).
- Windows 10 ESU devices: KB5131096, coverage of this CVE not confirmed.
- Other editions: KB numbers unknown; check the Microsoft advisory.
Workaround
Unknown. No mitigation guidance was found; apply the update.
Exploitation
- CISA SSVC: exploitation none, not automatable.
- Rapid7 rates exploitation as less likely and not publicly disclosed.
- No public proof-of-concept found.
Our recommendation
- Deploy the November 2026 cumulative updates on all affected systems, prioritising multi-user systems, terminal servers and file servers.
- Confirm the KB number per build against the Microsoft advisory before rollout.
- Review local logon rights and user accounts on shared systems.
- Include this CVE in the normal-priority November 2026 patch cycle.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – Windows FileCrypt Driver
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131291, KB5131085, KB5131096, KB5131090, KB5131087, KB5132061
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide: CVE-2026-113754 msrc.microsoft.com
- CVE Record CVE-2026-113754 www.cve.org
- Rapid7: Patch Tuesday November 2026 www.rapid7.com
- BleepingComputer: November 2026 Patch Tuesday www.bleepingcomputer.com
- BleepingComputer: KB5132061 and KB5131087 www.bleepingcomputer.com
- Windows Latest: KB5132061 www.windowslatest.com
- IT-Connect: Windows 10 KB5131096 www.it-connect.tech
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 20:55.
Original description (NVD)
Improper access control in Windows FileCrypt Driver allows an authorized attacker to disclose information locally.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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