CVE-2023-20523: amd 2nd gen epyc

Vulnerability summary

CVE-2023-20523 is a medium (CVSS 5.7) vulnerability in amd 2nd gen epyc. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7% of scored vulnerabilities.

Timeline

1. 10-01-2023
   PublishedVulnerability first disclosed.
2. 07-04-2025
   Last modifiedVulnerability information updated.

Description

TOCTOU in the ASP may allow a physical attacker to write beyond the buffer bounds, potentially leading to a loss of integrity or denial of service.

• CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionThe product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.