Microsoft Windows WMI: Information disclosure through out-of-bounds read
Summary
Windows Management Instrumentation (WMI) in several supported Windows 10, Windows 11 and Windows Server versions contains an out-of-bounds read. An authorized local user with low privileges can exploit it to read information they should not see. The flaw is not remotely exploitable and affects confidentiality only.
Affected
- Windows 10 Version 1607: 10.0.14393.0 to before 10.0.14393.9688
- Windows 10 Version 1809: 10.0.17763.0 to before 10.0.17763.9487
- Windows 10 Version 21H2: 10.0.19044.0 to before 10.0.19044.7846
- Windows 10 Version 22H2: 10.0.19045.0 to before 10.0.19045.7846
- Windows 11 Version 23H2: 10.0.22631.0 to before 10.0.22631.7711
- Windows 11 Version 24H2: 10.0.26100.0 to before 10.0.26100.9974
- Windows 11 Version 25H2: 10.0.26200.0 to before 10.0.26200.9974
- Windows 11 Version 26H1: 10.0.28000.0 to before 10.0.28000.3501
- Windows 11 Version 26H2: 10.0.26300.0 to before 10.0.26300.9974
- Windows Server 2016 (including Server Core): 10.0.14393.0 to before 10.0.14393.9688
- Windows Server 2019 (including Server Core): 10.0.17763.0 to before 10.0.17763.9487
- Windows Server 2022: 10.0.20348.0 to before 10.0.20348.5870
Fixed in
- Windows 10 Version 1607: 10.0.14393.9688
- Windows 10 Version 1809: 10.0.17763.9487
- Other products: Unknown. Per-build fixes are not confirmed on MSRC in this research. A third-party tracker lists 10.0.19044.7846, 10.0.19045.7846, 10.0.20348.5870 and 10.0.26100.33822, but these are not confirmed by the vendor.
Workaround
Unknown. No vendor workaround has been identified. Installing the November 2026 security update is the available mitigation.
Exploitation
- No confirmed in-the-wild exploitation.
- Not listed in the CISA KEV catalog according to a third-party tracker.
- No public proof of concept found.
- The CVSS vector rates exploit code maturity as unproven (E:U).
Our recommendation
- Install the November 2026 cumulative update on all affected Windows 10, Windows 11 and Windows Server systems. Confirm the exact update and build numbers on MSRC.
- Prioritise multi-user systems and Remote Desktop Session Host servers, where local users are more likely.
- Limit local logon on servers to trusted users and restrict who can run WMI-based tools.
- Monitor for unusual local activity after phishing incidents or on shared terminals.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – Windows Management Instrumentation
- 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 Response Center: CVE-2026-112965 msrc.microsoft.com
- CVE Record CVE-2026-112965 www.cve.org
- Strix.ai: CVE-2026-112965 (third-party, unconfirmed builds) www.strix.ai
- Senserva: KB5131085 (Windows Server 2019) senserva.com
- Senserva: KB5131096 (Windows 10 21H2) senserva.com
- Senserva: KB5132061 (Windows 11 24H2) senserva.com
- Senserva: KB5131080 (Windows Server 2025) senserva.com
- VulnERS: EUVD-2026-99556 vulners.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, 16:53.
Original description (NVD)
Out-of-bounds read in Windows Management Instrumentation 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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