No exploitation reportedFix available

CVE-2021-26322

Q: Is CVE-2021-26322 actively exploited?

Active exploitation of CVE-2021-26322 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-26322?

CVE-2021-26322 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

No exploitation reported by the sources we read.

Published2021-11-16
Fixed inromepi-sp3_1.0.0.c
WeaknessCWE-320 · CWE-330

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Persistent platform private key may not be protected with a random IV leading to a potential “two time pad attack”.

Timeline

dates in UTC

2021-11-1618:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-26322?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-26322?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Amd epyc 7232p firmwareversion to verify

Branch	Affected	Fixed in	Source
—	< romepi-sp3_1.0.0.c	romepi-sp3_1.0.0.c	NVD

Amd epyc 7251 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	< naplespi-sp3_1.0.0.g	naplespi-sp3_1.0.0.g	NVD

Amd epyc 7252 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	< romepi-sp3_1.0.0.c	romepi-sp3_1.0.0.c	NVD

54 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Amd epyc 7232p firmware to romepi-sp3_1.0.0.c

Advisories and patches

www.amd.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-320read 2026-10-23
NVDweakness (CWE)CWE-330read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2021-11-16
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-26322?

Persistent platform private key may not be protected with a random IV leading to a potential “two time pad attack”.

Is CVE-2021-26322 actively exploited?

Active exploitation of CVE-2021-26322 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-26322?

CVE-2021-26322 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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