Windows Advanced Rasterization Platform: Local privilege escalation (double free)
Summary
A double free vulnerability (CWE-415) in the Windows Advanced Rasterization Platform allows an authorized local user to elevate privileges. An attacker needs a low-privileged account and a foothold on the host, for example through a compromised session or malicious software. Successful exploitation can give full control of the affected system. The vendor rates the vulnerability as Important with CVSS 8.8.
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
Fixed in
Install the Microsoft security update for the respective Windows version (build numbers as listed above, from the CVE record). Verify build numbers and KB articles in the MSRC Security Update Guide before rollout.
Workaround
Unknown. No workaround or mitigation has been published. Patching is the recommended measure.
Exploitation
- No public exploit code known at publication (CVSS E:U).
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- No evidence of exploitation in the wild found; not listed in CISA KEV in the sources checked.
Our recommendation
- Patch affected systems in the next cycle, prioritising multi-user servers, RDS/terminal servers and shared workstations.
- Check whether neighbouring Windows Advanced Rasterization Platform CVEs (e.g. CVE-2026-105493, -105495, -105497, -105498) are patched in the same cycle.
- Restrict local logon and limit local accounts on servers.
- Monitor for public PoC code or CISA KEV listing, as the CVE was published recently.
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
- CVE Record CVE-2026-105496 www.cve.org
- Microsoft Security Update Guide CVE-2026-105496 msrc.microsoft.com
- Strix CVE-2026-105496 (third-party) 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, 00:04.
Original description (NVD)
Double 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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