CVE-2021-26311
HIGHAMD EPYC - Arbitrary Code Execution via SEV/SEV-ES Memory Rearrangement
Title source: llmDescription
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.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_misc
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004
Scores
CVSS v3
7.2
EPSS
0.0128
EPSS Percentile
79.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-77
Status
published
Products (50)
amd/epyc_7232p
amd/epyc_7251
amd/epyc_7252
amd/epyc_7261
amd/epyc_7262
amd/epyc_7272
amd/epyc_7281
amd/epyc_7282
amd/epyc_72f3
amd/epyc_7301
... and 40 more
Published
May 13, 2021
Tracked Since
Feb 18, 2026