Windows Graphics Kernel: Information disclosure via improper access control
Summary
The Windows Graphics Kernel, the kernel component behind graphics and display handling, contains an improper access control flaw (CWE-862). An authorized local attacker with low privileges can read information they should not be able to access. Exploitation requires a local logon and no user interaction, and only confidentiality is affected. The flaw cannot be exploited remotely from the internet.
Affected
- Windows 10 Version 1607, 1809, 21H2, 22H2
- Windows 11 Version 23H2, 24H2, 25H2, 26H1, 26H2
- Windows Server 2016, 2019, 2022 (including Server Core installations)
Source: CVE record. Other sources list different builds; these are unverified against MSRC.
Fixed in
- Fixed in the November 2026 security update. Install the cumulative update for each affected branch.
- Fixed builds per the CVE record (not yet confirmed on MSRC): Windows 10 1607 and Server 2016 10.0.14393.9688; 1809 and Server 2019 10.0.17763.9487; 21H2 10.0.19044.7846; 22H2 10.0.19045.7846; Windows 11 23H2 10.0.22631.7711; 24H2 10.0.26100.9974; 25H2 10.0.26200.9974; 26H1 10.0.28000.3501; 26H2 10.0.26300.9974; Server 2022 10.0.20348.5870.
Workaround
Unknown. No mitigation was identified in the sources. Patching is the remedy.
Exploitation
- No evidence of exploitation in the wild found; the MSRC "Exploited" flag is still to be confirmed.
- Not listed in CISA KEV in the sources checked.
- No public proof of concept found. Absence of results is not proof that none exists.
- CISA SSVC: exploitation none, not automatable, partial technical impact.
Our recommendation
- Install the November 2026 security update on all affected Windows 10, Windows 11 and Windows Server systems.
- Prioritise multi-user RDS/terminal servers, shared workstations and hosts where untrusted users or code can log on.
- Confirm the exact fixed build numbers on the MSRC page before relying on them.
- Re-check CISA KEV and public PoC status in the coming days.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – Windows Graphics Kernel
- 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-2026-96133 msrc.microsoft.com
- CVE Record CVE-2026-96133 (CVE.org) www.cve.org
- Senserva KB5131090 update article senserva.com
- Strix CVE-2026-96133 (third-party aggregator) www.strix.ai
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, 16:27.
Original description (NVD)
Improper access control in Windows Graphics Kernel 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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