Windows: Information disclosure in Secure Kernel Mode
Summary
Windows Secure Kernel Mode, a protected part of Windows, contains an information disclosure vulnerability (CWE-497). An attacker who already has high privileges on the local system can read sensitive information. Only confidentiality is affected; integrity and availability are not. The vulnerability is not remotely exploitable.
Affected
- Windows 10 Version 1607 (10.0.14393.0 to < 10.0.14393.9688)
- Windows 10 Version 1809 (10.0.17763.0 to < 10.0.17763.9487)
- Windows 10 Version 21H2 (10.0.19044.0 to < 10.0.19044.7846)
- Windows 10 Version 22H2 (10.0.19045.0 to < 10.0.19045.7846)
- Windows 11 Version 23H2 (10.0.22631.0 to < 10.0.22631.7711)
- Windows 11 Version 24H2 (10.0.26100.0 to < 10.0.26100.9974)
- Windows 11 Version 25H2 (10.0.26200.0 to < 10.0.26200.9974)
- Windows 11 Version 26H1 (10.0.28000.0 to < 10.0.28000.3501)
- Windows 11 Version 26H2 (10.0.26300.0 to < 10.0.26300.9974)
- Windows Server 2016 and Server Core installation (10.0.14393.0 to < 10.0.14393.9688)
- Windows Server 2019 and Server Core installation (10.0.17763.0 to < 10.0.17763.9487)
- Windows Server 2022 (10.0.20348.0 to < 10.0.20348.5870)
Fixed in
- Fixed in the builds listed in the Microsoft CVE record (for example 10.0.22631.7711 for Windows 11 23H2 and 10.0.26100.9974 for Windows 11 24H2).
- Sources disagree on some fixed builds (for example Windows 11 24H2). Confirm the exact build in the MSRC Security Update Guide before deployment.
Workaround
Unknown.
Exploitation
- Not known to be exploited in the wild.
- No public proof of concept found at the time of research.
- Microsoft rates exploit code maturity as unproven.
Our recommendation
- Install the current Windows security update on all affected systems as part of the normal monthly update cycle.
- Verify the fixed build for each system in the MSRC Security Update Guide.
- Prioritize multi-user systems such as terminal servers, where local accounts are common.
- Check that Windows 10 1607/1809 and Server 2016/2019 systems still receive updates, or plan their replacement.
- Recheck NVD and CISA KEV for changes in exploitation status.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – Windows Secure Kernel Mode
- 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-2026-112757 msrc.microsoft.com
- CVE Record CVE-2026-112757 (CVE Program) www.cve.org
- Strix AI: CVE-2026-112757 www.strix.ai
- Senserva: Windows Server 2019 update summary KB5131085 senserva.com
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, 14:48.
Original description (NVD)
Exposure of sensitive information to an unauthorized actor in Windows Secure Kernel Mode 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.
Affected? We can help.
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