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Vulnerability · Published Dec 9, 2025 · Assigned by microsoft

CVE-2025-62466Windows Client-Side Caching Elevation of Privilege Vulnerability

High 7.8

In plain English

A high-severity null pointer dereference in Windows 10 Version 1607 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.4%top 65.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Null pointer dereference in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.

Affected products (as reported)

VendorProductVersions
Microsoft Windows 10 Version 1607 10.0.14393.0 – before 10.0.14393.8688
Microsoft Windows 10 Version 1809 10.0.17763.0 – before 10.0.17763.8146
Microsoft Windows 10 Version 21H2 10.0.19044.0 – before 10.0.19044.6691
Microsoft Windows 10 Version 22H2 10.0.19045.0 – before 10.0.19045.6691
Microsoft Windows 11 version 22H3 10.0.22631.0 – before 10.0.22631.6345
Microsoft Windows 11 Version 23H2 10.0.22631.0 – before 10.0.22631.6345
Microsoft Windows 11 Version 24H2 10.0.26100.0 – before 10.0.26100.7462
Microsoft Windows 11 Version 25H2 10.0.26200.0 – before 10.0.26200.7462
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – before 6.1.7601.28064
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – before 6.1.7601.28064
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.23666
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – before 6.0.6003.23666
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.25815
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.25815
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.22920
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.22920
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.8688
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.8688
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.8146
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.8146
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.4529
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – before 10.0.25398.2025
Microsoft Windows Server 2025 10.0.26100.0 – before 10.0.26100.7462
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – before 10.0.26100.7462

Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

References