Cyber Resilience

CVE-2021-26337

Medium

Published: 16 November 2021

Published
16 November 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0013 31.9th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-26337 is a medium-severity an unspecified weakness vulnerability in Amd Epyc 7003 Firmware. Its CVSS base score is 5.5 (Medium).

Operationally, ranked at the 31.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

amd
epyc 7003 firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 7002 firmware
≤ romepi-sp3_1.0.0.c
amd
epyc 72f3 firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 7313 firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 7313p firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 7343 firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 73f3 firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 7413 firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 7443 firmware
≤ milanpi-sp3_1.0.0.4
amd
epyc 7443p firmware
≤ milanpi-sp3_1.0.0.4
+102 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References