Vulnerability · Published Nov 16, 2021 · Assigned by AMD
CVE-2021-26331
High 7.8
In plain English
A high-severity improper input validation in 1st Gen AMD EPYC™ from AMD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.3%top 77.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbitrary code execution.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | 1st Gen AMD EPYC™ | unspecified – before NaplesPI-SP3_1.0.0.G |
| AMD | 2nd Gen AMD EPYC™ | unspecified – before RomePI-SP3_1.0.0.C |
| AMD | 3rd Gen AMD EPYC™ | unspecified – before MilanPI-SP3_1.0.0.4 |
Weakness: CWE-20