SB20250311117 - Privilege escalation in Microsoft Windows Core Messaging
Published: March 11, 2025 Updated: April 28, 2025
Security Bulletin ID
SB20250311117
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2025-26634)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to a boundary error in Windows Core Messaging. A remote user can send a specially crafted request to the system, trigger a heap-based buffer overflow and execute arbitrary code with SYSTEM privileges.
Remediation
Install update from vendor's website.