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CVE-2021-26331

AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to…

High7.8EPSS 0.29%
Published
Updated
Reserved
Assigned by
AMD

Description

AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbitrary code execution.

Scores

CVSS scores of CVE-2021-26331, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.29% · top 78% of all CVEs (3 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • AMD · 1st Gen AMD EPYC™

    • affected unspecified – < NaplesPI-SP3_1.0.0.G

  • AMD · 2nd Gen AMD EPYC™

    • affected unspecified – < RomePI-SP3_1.0.0.C

  • AMD · 3rd Gen AMD EPYC™

    • affected unspecified – < MilanPI-SP3_1.0.0.4

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .