Privilege Elevation Vulnerability in Windows Client-Side Caching Service by Microsoft
CVE-2025-62466

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
9 December 2025

What is CVE-2025-62466?

A vulnerability exists in the Windows Client-Side Caching (CSC) Service that allows an authorized attacker to exploit a null pointer dereference. By leveraging this flaw, a malicious actor can potentially elevate their privileges locally, posing a serious threat to the system's security posture. To safeguard against such risks, it is critical for users to implement the latest security updates provided by Microsoft.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8688

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8146

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.6691

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-62466 : Privilege Elevation Vulnerability in Windows Client-Side Caching Service by Microsoft