CVE-2025-55224: Microsoft Windows 10 Version 1809 · Race Condition
Affects Microsoft Windows 10 Version 1809Source CVE Database V5
Not known to be exploited · CVSS 7.8 High.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 9 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1809 | Affected
| Fixed in– |
AI-suggested
To mitigate CVE-2025-55224 effectively, organizations should: 1) Prioritize upgrading or patching Windows 10 systems to versions later than 1809 where this vulnerability is not present or patched once available. 2) Implement strict access controls to limit local user privileges, minimizing the number of users with low-level access that could exploit this vulnerability. 3) Employ application whitelisting and endpoint detection and response (EDR) solutions to detect and block suspicious local code execution attempts. 4) Monitor system logs and behavior for signs of race condition exploitation or unusual Win32K subsystem activity. 5) Use virtualization or sandboxing for untrusted applications to reduce the risk of local privilege escalation. 6) Restrict physical and remote access to systems running Windows 10 1809 to trusted personnel only. 7) Stay informed on vendor advisories and apply patches immediately upon release. 8) Consider migrating critical workloads to supported Windows versions with active security updates to reduce exposure to legacy vulnerabilities.
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to execute code locally.