Vulnerability · Published May 11, 2022 · Assigned by AMD
CVE-2021-26339
Medium 5.5
In plain English
A medium-severity security flaw in Athlon™ Series 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 20% of all known vulnerabilities).
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 79.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by compilers.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | EPYC™ Processors | various |
| AMD | Ryzen™ Series | various |
| AMD | Athlon™ Series | various |