CVE-2021-26382

Name: CVE-2021-26382
Creator: NVD / NIST
Published: 2022-07-14T20:15:08.097+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2021-26382 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. An attacker with root account privileges can load any legitimately signed firmware image into the Audio Co-Processor (ACP,) irrespective of the respective signing key being declared as usable for authenticating an ACP firmware image, potentially resulting in a denial of service.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

An attacker with root account privileges can load any legitimately signed firmware image into the Audio Co-Processor (ACP,) irrespective of the respective signing key being declared as usable for authenticating an ACP firmware image, potentially resulting in a denial of service.

Metrics

CVSS 3.1

4.4/10

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

EPSS Probability

0.18%

7.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Amd	Ryzen 7 5700g Firmware	< comboam4_v2_pi_1.2.0.6c
Amd	Ryzen 7 5700ge Firmware	< comboam4_v2_pi_1.2.0.6c
Amd	Ryzen 5 5600g Firmware	< comboam4_v2_pi_1.2.0.6c
Amd	Ryzen 5 5600ge Firmware	< comboam4_v2_pi_1.2.0.6c
Amd	Ryzen 3 5300g Firmware	< comboam4_v2_pi_1.2.0.6c
Amd	Ryzen 3 5300ge Firmware	< comboam4_v2_pi_1.2.0.6c
Amd	Ryzen 9 5980hx Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 9 5980hs Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 7 5825u Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 9 5900hx Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 9 5900hs Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 7 5825c Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 7 5800h Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 5 5625u Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 7 5800hs Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 5 5625c Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 5 5600h Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 5 5600hs Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 7 5800u Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 5 5600u Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 5 5560u Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 3 5425u Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 3 5425c Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 3 5400u Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 3 5125c Firmware	< cezannepi-fp6_1.0.0.9
Amd	Ryzen 3 3200u Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 3 3250u Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 3 3300u Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 5 3500u Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 5 3550h Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 5 3580u Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 7 3700u Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 7 Pro 3700u Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 7 3750h Firmware	< renoirpi-fp6_1.0.0.7
Amd	Ryzen 7 3780u Firmware	< renoirpi-fp6_1.0.0.7

References

https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027Vendor Advisory

Timeline

Published: Jul 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26382?

How severe is CVE-2021-26382?

CVE-2021-26382 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26382?

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-2021-26382?

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

Scan your code now

Source: NVD / NIST