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Medium severity · published Jul 14, 2022
CVE-2021-26382
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…
4.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
R3
Ryzen 3 3200u Firmware · Amd
before renoirpi-fp6_1.0.0.7 · source: NVD
R3
Ryzen 3 3250u Firmware · Amd
before renoirpi-fp6_1.0.0.7 · source: NVD
R3
Ryzen 3 3300u Firmware · Amd
before renoirpi-fp6_1.0.0.7 · source: NVD
R3
Ryzen 3 5125c Firmware · Amd
before cezannepi-fp6_1.0.0.9 · source: NVD
R3
Ryzen 3 5300g Firmware · Amd
before comboam4_v2_pi_1.2.0.6c · source: NVD
R3
Ryzen 3 5300ge Firmware · Amd
before comboam4_v2_pi_1.2.0.6c · source: NVD
R3
Ryzen 3 5400u Firmware · Amd
before cezannepi-fp6_1.0.0.9 · source: NVD
R3
Ryzen 3 5425c Firmware · Amd
before cezannepi-fp6_1.0.0.9 · source: NVD
R3
Ryzen 3 5425u Firmware · Amd
before cezannepi-fp6_1.0.0.9 · source: NVD
R5
Ryzen 5 3500u Firmware · Amd
before renoirpi-fp6_1.0.0.7 · source: NVD
R5
Ryzen 5 3550h Firmware · Amd
before renoirpi-fp6_1.0.0.7 · source: NVD
R5
Ryzen 5 3580u Firmware · Amd
before renoirpi-fp6_1.0.0.7 · source: NVD
Affected product
R3
Ryzen 3 3200u Firmware
Amd
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26382
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26382
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
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