Vulnerability · Published Jan 10, 2023 · Assigned by AMD
CVE-2021-26409
High 7.8
In plain English
A high-severity buffer overflow in 3rd 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 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 90.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | 3rd Gen EPYC | various |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H