Windows Advanced Rasterization Platform: Type confusion leads to privilege escalation
Summary
A type confusion weakness (CWE-843) in the Windows Advanced Rasterization Platform (WARP) allows an authorized local attacker to elevate privileges. The attacker needs a valid low-privileged local account and must run code on the system, for example through a malicious file or a compromised user session. The CVSS 3.1 score is 8.8 (High) with a changed scope and high impact on confidentiality, integrity and availability.
Affected
- Windows 10 Version 1809 and Windows Server 2019 (including Server Core): builds 10.0.17763.0 to before 10.0.17763.9376
- Windows 10 Version 21H2: builds 10.0.19044.0 to before 10.0.19044.7807
- Windows 10 Version 22H2: builds 10.0.19045.0 to before 10.0.19045.7807
- Windows 11 Version 23H2: builds 10.0.22631.0 to before 10.0.22631.7652
- Windows 11 Version 24H2 and 25H2, and Windows 11 Version 26H2: builds 10.0.26100.0 to before 10.0.26100.9711 (24H2), 10.0.26200.0 to before 10.0.26200.9711 (25H2), 10.0.26300.0 to before 10.0.26300.9711 (26H2)
- Windows 11 Version 26H1: builds 10.0.28000.0 to before 10.0.28000.3231
- Windows Server 2022: builds 10.0.20348.0 to before 10.0.20348.5761
- Windows Server 2025 (including Server Core): builds 10.0.26100.0 to before 10.0.26100.33650
Fixed in
- Fixed in the builds listed as the upper limit of each affected range, or later, as published by Microsoft.
- Specific KB numbers: Unknown.
Workaround
Unknown.
Exploitation
- No public exploitation reports, proof-of-concept code or CISA KEV entry were found at the time of writing.
Our recommendation
- Install the November 2026 cumulative update on all affected Windows 10, Windows 11 and Windows Server systems.
- Prioritise terminal servers, RDS hosts and systems used by many people, as local privilege escalation usually follows an initial foothold.
- Restrict local logon to trusted users and review accounts with local access.
- Confirm the KB numbers and any mitigations on the Microsoft Security Update Guide and watch the NVD and CISA KEV entries.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows Advanced Rasterization Platform
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5126651, KB5126657, KB5126655, KB5126653, KB5127648, KB5126646
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide: CVE-2026-95960 msrc.microsoft.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 10 Nov 2026, 20:55.
Original description (NVD)
Access of resource using incompatible type ('type confusion') in Windows Advanced Rasterization Platform allows an authorized attacker to elevate privileges 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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