VULNERABILITY INTELLIGENCE

CVE-2021-26311

CVSS score7.2 HIGH
EPSS probability1.68%
CISA KEVNot currently listed
Published2021-05-13
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-77

Primary references