Vulnerability · Published May 13, 2021 · Assigned by AMD
CVE-2021-26311AMD Secure Encrypted Virtualization
High 7.2
In plain English
A high-severity security flaw in SEV/SEV-ES from AMD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).
Severity (CVSS NVD)7.2High
Exploit odds (30 days)1.7%top 22.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | SEV/SEV-ES | unspecified – before SEV-SNP |