Windows Advanced Rasterization Platform: Use-after-free allows local privilege escalation
Summary
A use-after-free flaw in the Windows Advanced Rasterization Platform (WARP), a Windows graphics component, allows an authorized local user to elevate privileges. The attacker needs a low-privilege account and local access, and attack complexity is high. The CVSS vector rates the impact as high for confidentiality, integrity and availability, but the flaw is not remotely exploitable.
Affected
- Windows 10 Version 1809 (before 10.0.17763.9376)
- Windows 10 Version 21H2 (before 10.0.19044.7807)
- Windows 10 Version 22H2 (before 10.0.19045.7807)
- Windows 11 Version 23H2 (before 10.0.22631.7652)
- Windows 11 Version 24H2 (before 10.0.26100.9711)
- Windows 11 Version 25H2 (before 10.0.26200.9711)
- Windows 11 Version 26H1 (before 10.0.28000.3231)
- Windows 11 Version 26H2 (before 10.0.26300.9711)
- Windows Server 2019, including Server Core (before 10.0.17763.9376)
- Windows Server 2022 (before 10.0.20348.5761)
- Windows Server 2025, including Server Core (before 10.0.26100.33650)
- Other Windows builds are not covered by the sources reviewed.
Fixed in
- Fixed builds are part of Microsoft's November 2026 security update, at the build numbers listed under affected.
- Verify the build numbers against the Microsoft Security Update Guide, because some secondary sources conflict.
Workaround
Unknown. No workaround was found in the sources reviewed. Installing the update removes the vulnerability.
Exploitation
- Exploited in the wild: no evidence found.
- Public exploit code: no evidence found.
- The CVSS vector contains E:U (Unproven exploit maturity).
Our recommendation
- Install the November 2026 security update on all affected Windows systems, starting with multi-user machines, terminal servers and shared workstations.
- Check the inventory for older builds such as Windows 10 1809 and 21H2, and confirm their Windows 10 support status.
- Restrict local accounts and limit untrusted applications, since an attacker needs a local foothold first.
- Monitor for unusual privilege changes on endpoints.
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-2026-118224 msrc.microsoft.com
- CVE Record: CVE-2026-118224 www.cve.org
- Strix: CVE-2026-118224 www.strix.ai
- Rapid7: Patch Tuesday November 2026 www.rapid7.com
- Cisco Talos: Microsoft Patch Tuesday November 2026 blog.talosintelligence.com
- Tenable: Microsoft November 2026 Patch Tuesday www.tenable.com
- Zero Day Initiative: November 2026 Security Update Review www.zerodayinitiative.com
- Action1: Patch Tuesday November 2026 www.action1.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, 03:56.
Original description (NVD)
Use after free 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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