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Windows Graphics Kernel: Information disclosure vulnerability

CVE-2026-96137Medium 5.5

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Summary

A local information disclosure flaw in the Windows Graphics Kernel allows an authorized, low-privileged user to read sensitive system information. The attacker must already have local access and cannot exploit this remotely. The CVE alone does not provide code execution or privilege escalation, but disclosed data could support a later attack step.

Affected

  • Windows 11 Version 24H2: 10.0.26100.0 before 10.0.26100.9974
  • Windows 11 Version 25H2: 10.0.26200.0 before 10.0.26200.9974
  • Windows 11 Version 26H1: 10.0.28000.0 before 10.0.28000.3501
  • Windows 11 Version 26H2: 10.0.26300.0 before 10.0.26300.9974
  • Windows Server 2025 (including Server Core installation): 10.0.26100.0 before 10.0.26100.33822

Fixed in

Fixed in the November 2026 cumulative update. Minimum fixed builds:

  • Windows 11 Version 24H2: 10.0.26100.9974
  • Windows 11 Version 25H2: 10.0.26200.9974
  • Windows 11 Version 26H1: 10.0.28000.3501
  • Windows 11 Version 26H2: 10.0.26300.9974
  • Windows Server 2025: 10.0.26100.33822

KB numbers: Unknown.

Workaround

Unknown. No workaround or mitigation is documented; apply the update.

Exploitation

  • Not known to be exploited in the wild.
  • No public proof of concept found.
  • CISA SSVC: exploitation none, automatable no, technical impact partial.

Our recommendation

  • Install the November 2026 cumulative update on all affected Windows 11 and Windows Server 2025 systems as part of the normal monthly cycle.
  • Prioritise shared workstations, RDS/terminal servers and systems where untrusted or low-privileged users run code.
  • Install the full cumulative update, as the same component has higher-severity fixes in the same release.
  • Verify the product list and KB numbers in the MSRC advisory.

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
Updates (KB)
KB5132061, KB5132043, KB5131080, KB5131077, KB5132059

Entry in the Microsoft Security Update Guide

Public exploits

PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.

Research sources

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, 16:18.

Original description (NVD)

Exposure of sensitive system information to an unauthorized control sphere 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:

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.

We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.