Microsoft Windows: Information disclosure in Graphics Kernel via uninitialized resource
Summary
An uninitialized resource in the Windows Graphics Kernel allows a locally authorized attacker to read information that should not be accessible to them. The attacker needs a local account or local code execution on the system, and the impact is limited to confidentiality. The CVSS 3.1 base score is 4.7 (Medium), and CISA SSVC lists no known exploitation.
Affected
- Windows 10 Version 1607 and Windows Server 2016 (including Server Core): builds before 10.0.14393.9688
- Windows 10 Version 1809 and Windows Server 2019 (including Server Core): builds before 10.0.17763.9487
- Windows 10 Version 21H2: builds before 10.0.19044.7846
- Windows 10 Version 22H2: builds before 10.0.19045.7846
- Windows 11 Version 23H2: builds before 10.0.22631.7711
- Windows 11 Version 24H2: builds before 10.0.26100.9974
- Windows 11 Version 25H2: builds before 10.0.26200.9974
- Windows 11 Version 26H1: builds before 10.0.28000.3501
- Windows 11 Version 26H2: builds before 10.0.26300.9974
- Windows Server 2022: builds before 10.0.20348.5870
Fixed in
- Install the November 2026 security update for the affected builds listed above.
- Vendor-listed fixed builds: 10.0.14393.9688, 10.0.17763.9487, 10.0.19044.7846, 10.0.19045.7846, 10.0.22631.7711, 10.0.26100.9974, 10.0.26200.9974, 10.0.28000.3501, 10.0.26300.9974, 10.0.20348.5870.
- Confirm the exact update package for each build in the MSRC Security Update Guide.
Workaround
Unknown.
Exploitation
- Not exploited in the wild according to the CISA SSVC assessment (Exploitation: none) and third-party trackers.
- Not publicly disclosed and no public proof of concept found, according to Rapid7.
- No EPSS score available.
Our recommendation
- Install the November 2026 security update on all affected Windows systems, prioritising servers and multi-user hosts such as RDS and terminal servers.
- Check whether Windows 10 1607, 1809 and 21H2 devices are still receiving security updates, as these editions are out of servicing and require ESU or an upgrade.
- Restrict local accounts to the minimum necessary privileges and monitor endpoints for unusual local activity.
- Apply this update in the normal monthly patch cycle, after the more severe items in the same batch.
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
- CVE record (CVE.org) www.cve.org
- MSRC Security Update Guide msrc.microsoft.com
- Rapid7: November 2026 Patch Tuesday www.rapid7.com
- Senserva KB5131096 (third-party) senserva.com
- Senserva KB5131090 (third-party) senserva.com
- Strix CVE-2026-96048 (third-party, versions inconsistent) 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, 20:16.
Original description (NVD)
Use of uninitialized resource 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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