Vulnerability · Published May 9, 2023 · Assigned by AMD
CVE-2021-26379
Critical 9.8
In plain English
A critical-severity security flaw in 2nd 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 0.7% (higher than 53% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.7%top 47.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Insufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of integrity and privilege escalation.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | 2nd Gen AMD EPYC™ | various |
| AMD | 3rd Gen AMD EPYC™ | various |