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High severity · published Apr 8, 2025
CVE-2025-26687
Win32k Elevation of Privilege Vulnerability
7.5
CVSS
1.1%
EPSS
No
On KEV
Description
Use after free in Windows Win32K - GRFX allows an unauthorized attacker to elevate privileges over a network.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OF
Office · Microsoft
before 16.0.14326.22331 · source: NVD
MO
Microsoft Office for Android · Microsoft
16.0.1 before 16.0.18730.20000 · source: vendor
MO
Microsoft Office for Universal · Microsoft
16.0.1 before 16.0.14326.22331 · source: vendor
W1
Windows 10 Version 1507 · Microsoft
10.0.10240.0 before 10.0.10240.20978 · source: vendor
W1
Windows 10 Version 1607 · Microsoft
10.0.14393.0 before 10.0.14393.7969 · source: vendor
W1
Windows 10 Version 1809 · Microsoft
10.0.17763.0 before 10.0.17763.7136 · source: vendor
W1
Windows 10 Version 21H2 · Microsoft
10.0.19044.0 before 10.0.19044.5737 · source: vendor
W1
Windows 10 Version 22H2 · Microsoft
10.0.19045.0 before 10.0.19045.5737 · source: vendor
W1
Windows 11 Version 23H2 · Microsoft
10.0.22631.0 before 10.0.22631.5189 · source: vendor
W1
Windows 11 Version 24H2 · Microsoft
10.0.26100.0 before 10.0.26100.3775 · source: vendor
W1
Windows 11 version 22H2 · Microsoft
10.0.22621.0 before 10.0.22621.5189 · source: vendor
W1
Windows 11 version 22H3 · Microsoft
10.0.22631.0 before 10.0.22631.5189 · source: vendor
Affected product
OF
Office
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-26687
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-26687
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26687
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