High severity · published Sep 9, 2025
CVE-2025-55224
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to execute code locally
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
W1
Windows 10 1809 · Microsoft
before 10.0.17763.7792 · source: NVD
W1
Windows 10 21h2 · Microsoft
before 10.0.19044.6332 · source: NVD
W1
Windows 10 22h2 · Microsoft
before 10.0.19045.6332 · source: NVD
W1
Windows 11 22h2 · Microsoft
before 10.0.22621.5909 · source: NVD
W1
Windows 11 23h2 · Microsoft
before 10.0.22631.5909 · source: NVD
W1
Windows 11 24h2 · Microsoft
before 10.0.26100.6508 · source: NVD
WS
Windows Server 2019 · Microsoft
before 10.0.17763.7792 · source: NVD
WS
Windows Server 2022 · Microsoft
before 10.0.20348.4106 · source: NVD
WS
Windows Server 2022 23h2 · Microsoft
before 10.0.25398.1849 · source: NVD
WS
Windows Server 2025 · Microsoft
before 10.0.26100.6508 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55224
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55224
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55224
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