SB2026042081 - Information disclosure in AMD CPUs
Published: April 20, 2026
Security Bulletin ID
SB2026042081
Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Observable discrepancy (CVE-ID: CVE-2025-54505)
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to transient execution in floating-point divisor unit when executing floating-point operations in privileged code. A local user can sample data from the floating-point divisor unit to disclose sensitive information.
The issue affects systems with SMT enabled as well as systems without SMT.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.