SB20250521149 - Microcode signature verification bypass in AMD processors
Published: May 21, 2025
Security Bulletin ID
SB20250521149
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2024-36347)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper signature verification of x86 instruction execution. A local privileged user can load malicious microcode and execute it on the system.
Remediation
Install update from vendor's website.