CVE-2021-26367
A malicious attacker in x86 can misconfigure the Trusted Memory Regions (TMRs), which may allow the attacker to set an arbitrary address range for the TMR, potentially leading to a loss of integrity and availability.
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
A malicious attacker in x86 can misconfigure the Trusted Memory Regions (TMRs), which may allow the attacker to set an arbitrary address range for the TMR, potentially leading to a loss of integrity and availability.
- CVSS 3.1
- 6.0 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.16% probability · 5th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- amd/radeon software · amd/ryzen 9 5980hx firmware · amd/ryzen 3 3300u firmware · amd/ryzen 3 3350u firmware · amd/ryzen 5 3450u firmware · amd/ryzen 5 3500u firmware · amd/ryzen 5 3500c firmware · amd/ryzen 5 3550h firmware · amd/ryzen 5 3580u firmware · amd/ryzen 7 3700u firmware · amd/ryzen 7 3700c firmware · amd/ryzen 7 3750h firmware · amd/ryzen 7 3780u firmware · amd/athlon gold 3150c firmware · amd/athlon gold 3150u firmware · amd/athlon pro 3145b firmware · amd/athlon silver 3050c firmware · amd/athlon silver 3050u firmware · amd/athlon pro 3045b firmware · amd/athlon silver 3050e firmware · +16 more
- Source
- psirt@amd.com
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.