AMD 2nd Gen EPYC

CVE-2021-26407

MEDIUM 5.5

At a glance

Source: NVD
EPSS: EPSS 0.19 % · percentile 9 (2026-10-31)
State: PUBLISHED
Published: 2023-01-10 20:56 UTC
Updated: 2025-04-08 20:19 UTC
Assigner: AMD
NVD status: Modified

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Description

A randomly generated Initialization Vector (IV) may lead to a collision of IVs with the same key potentially resulting in information disclosure.

Weaknesses (CWE)

CWE-330 — Use of Insufficiently Random Values

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	CISA-ADP
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	NVD · nvd@nist.gov (Primary)
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

ENISA EUVD · EUVD-2021-13213
GCVE · GCVE-0-2021-26407

Affected configurations (NVD CPE)

cpe:2.3:o:amd:romepi_firmware:*:*:*:*:*:*:*:* < 1.0.0.a

Affected products

Product	Versions
AMD · 2nd Gen EPYC	affected various

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD