Vulnerability · Published Jan 10, 2023 · Assigned by AMD
CVE-2021-26316
High 7.8
In plain English
A high-severity improper input validation in 1st Gen 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 19% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 81.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | Ryzen 5000 Series | various |
| AMD | Ryzen 2000 Series | various |
| AMD | Ryzen 3000 Series | various |
| AMD | 1st Gen EPYC | various |
| AMD | 2nd Gen EPYC | Various |
| AMD | 3rd Gen EPYC | various |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H