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UK Cyber Defence
VulnerabilityAnalyzed

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.

MEDIUM 6.0EPSS 0.16%

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
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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.