Windows Advanced Rasterization Platform: Local information disclosure
Summary
A flaw in the Windows Advanced Rasterization Platform, a graphics rendering component of Windows, uses an uninitialized resource and can disclose information. An attacker needs local access and a low-privilege account, and no user interaction is required. The impact is limited to confidentiality, but the flaw can help an attacker in a chain with other vulnerabilities.
Affected
- Windows 10 Version 1809: 10.0.17763.0 to before 10.0.17763.9376 - Windows 10 Version 21H2: 10.0.19044.0 to before 10.0.19044.7807 - Windows 10 Version 22H2: 10.0.19045.0 to before 10.0.19045.7807 - Windows 11 Version 23H2: 10.0.22631.0 to before 10.0.22631.7652 - Windows 11 Version 24H2: 10.0.26100.0 to before 10.0.26100.9711 - Windows 11 Version 25H2: 10.0.26200.0 to before 10.0.26200.9711 - Windows 11 Version 26H1: 10.0.28000.0 to before 10.0.28000.3231 - Windows 11 Version 26H2: 10.0.26300.0 to before 10.0.26300.9711 - Windows Server 2019 (including Server Core): 10.0.17763.0 to before 10.0.17763.9376 - Windows Server 2022: 10.0.20348.0 to before 10.0.20348.5761 - Windows Server 2025 (including Server Core): 10.0.26100.0 to before 10.0.26100.33650 - Third-party aggregators list build numbers that differ in part from the CNA record; verify against the MSRC advisory.
Fixed in
- Microsoft November 2026 security updates. Fixed builds are listed in the CNA record above, verify on the MSRC advisory before rollout.
Workaround
Unknown. No vendor workaround is documented in the available sources; rely on patching.
Exploitation
- No known exploitation in the wild. - Microsoft rates the vulnerability Important. - CISA SSVC: exploitation none, automatable no, technical impact partial. - Rapid7 rates exploitation as less likely. - No public proof of concept found.
Our recommendation
- Install the November 2026 Windows security updates on all affected systems in the next regular patch window. - Shorten the window for multi-user servers, RDS or terminal hosts and shared workstations, where local access is more likely. - Patch the whole November 2026 rasterization component batch, not only this CVE. - Monitor for suspicious local activity on systems where users have low-privilege accounts.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – 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
- CVE Record CVE-2026-118214 (CNA) www.cve.org
- Microsoft Security Update Guide CVE-2026-118214 msrc.microsoft.com
- Strix.ai CVE-2026-118214 (cross-check) www.strix.ai
- Rapid7 Patch Tuesday November 2026 analysis www.rapid7.com
- BleepingComputer Microsoft November 2026 Patch Tuesday www.bleepingcomputer.com
- Qualys Microsoft Patch Tuesday November 2026 review blog.qualys.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, 12:13.
Original description (NVD)
Use of uninitialized resource in Windows Advanced Rasterization Platform 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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