CVE-2025-21375
Published: 11 February 2025
Description
Kernel Streaming WOW Thunk Service Driver Elevation of Privilege Vulnerability
Security Summary
CVE-2025-21375 is a Kernel Streaming WOW Thunk Service Driver Elevation of Privilege Vulnerability affecting Microsoft Windows operating systems. Published on 2025-02-11, the issue carries a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and is associated with CWE-20 (Improper Input Validation), CWE-122 (Heap-based Buffer Overflow), and NVD-CWE-noinfo.
The vulnerability can be exploited by a local attacker who already possesses low-level privileges on the target system. Exploitation requires low complexity and no user interaction, allowing the attacker to elevate privileges with high impacts on confidentiality, integrity, and availability, potentially leading to full system compromise.
Microsoft's advisory provides details on mitigation, available at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21375. Security practitioners should review the update guide for patching instructions and apply relevant updates promptly.
Details
- CWE(s)