SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-46774

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

HIGH 7.5EPSS 0.51%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.51% probability · 42th percentile
CISA KEV
Not listed
Affected
amd/epyc 7001 firmware · amd/epyc 7251 firmware · amd/epyc 7261 firmware · amd/epyc 7281 firmware · amd/epyc 7301 firmware · amd/epyc 7351 firmware · amd/epyc 7351p firmware · amd/epyc 7371 firmware · amd/epyc 7401 firmware · amd/epyc 7401p firmware · amd/epyc 7451 firmware · amd/epyc 7501 firmware · amd/epyc 7551 firmware · amd/epyc 7551p firmware · amd/epyc 7601 firmware · amd/epyc 7232p firmware · amd/epyc 7252 firmware · amd/epyc 7262 firmware · amd/epyc 7272 firmware · amd/epyc 7282 firmware · +40 more
Source
psirt@amd.com

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