CVE-2021-26345

Name: CVE-2021-26345
Creator: NVD / NIST
Published: 2023-11-14T19:15:10.19+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2021-26345 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service.

Metrics

CVSS 3.1

4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.43%

34.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Amd	Epyc 7h12 Firmware	< romepi_1.0.0.f
Amd	Epyc 7f72 Firmware	< romepi_1.0.0.f
Amd	Epyc 7f52 Firmware	< romepi_1.0.0.f
Amd	Epyc 7f32 Firmware	< romepi_1.0.0.f
Amd	Epyc 7742 Firmware	< romepi_1.0.0.f
Amd	Epyc 7702p Firmware	< romepi_1.0.0.f
Amd	Epyc 7702 Firmware	< romepi_1.0.0.f
Amd	Epyc 7662 Firmware	< romepi_1.0.0.f
Amd	Epyc 7642 Firmware	< romepi_1.0.0.f
Amd	Epyc 7552 Firmware	< romepi_1.0.0.f
Amd	Epyc 7542 Firmware	< romepi_1.0.0.f
Amd	Epyc 7532 Firmware	< romepi_1.0.0.f
Amd	Epyc 7502p Firmware	< romepi_1.0.0.f
Amd	Epyc 7502 Firmware	< romepi_1.0.0.f
Amd	Epyc 7452 Firmware	< romepi_1.0.0.f
Amd	Epyc 7402p Firmware	< romepi_1.0.0.f
Amd	Epyc 7402 Firmware	< romepi_1.0.0.f
Amd	Epyc 7352 Firmware	< romepi_1.0.0.f
Amd	Epyc 7302p Firmware	< romepi_1.0.0.f
Amd	Epyc 7302 Firmware	< romepi_1.0.0.f
Amd	Epyc 7282 Firmware	< romepi_1.0.0.f
Amd	Epyc 7272 Firmware	< romepi_1.0.0.f
Amd	Epyc 7262 Firmware	< romepi_1.0.0.f
Amd	Epyc 7252 Firmware	< romepi_1.0.0.f
Amd	Epyc 7232p Firmware	< romepi_1.0.0.f
Amd	Epyc 7203 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7203p Firmware	< milanpi_1.0.0.a
Amd	Epyc 72f3 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7303 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7303p Firmware	< milanpi_1.0.0.a
Amd	Epyc 7313 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7313p Firmware	< milanpi_1.0.0.a
Amd	Epyc 7343 Firmware	< milanpi_1.0.0.a
Amd	Epyc 73f3 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7373x Firmware	< milanpi_1.0.0.a
Amd	Epyc 7413 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7443 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7443p Firmware	< milanpi_1.0.0.a
Amd	Epyc 74f3 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7453 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7473x Firmware	< milanpi_1.0.0.a
Amd	Epyc 7513 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7543 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7543p Firmware	< milanpi_1.0.0.a
Amd	Epyc 75f3 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7573x Firmware	< milanpi_1.0.0.a
Amd	Epyc 7643 Firmware	< milanpi_1.0.0.a
Amd	Epyc 7773x Firmware	< milanpi_1.0.0.a
Amd	Epyc 7643p Firmware	< milanpi_1.0.0.a
Amd	Epyc 7663 Firmware	< milanpi_1.0.0.a

Showing 50 of 90 affected configurations. See NVD for the full list.

References

Timeline

Published: Nov 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26345?

Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service.

How severe is CVE-2021-26345?

CVE-2021-26345 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26345?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26345?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST