Insufficient validation of BIOS image length by ASP Firmware could lead to arbitrary code execution.

published 2021-11-16 4 y ago modified 2026-06-17 4 mo ago also EUVD-2020-5224

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

Patch / fix

fixed in 20

amd epyc_7601_firmware naplespi-sp3_1.0.0.g
amd epyc_7551p_firmware naplespi-sp3_1.0.0.g
amd epyc_7551_firmware naplespi-sp3_1.0.0.g
amd epyc_7501_firmware naplespi-sp3_1.0.0.g
amd epyc_7451_firmware naplespi-sp3_1.0.0.g
amd epyc_7401_firmware naplespi-sp3_1.0.0.g
amd epyc_7371_firmware naplespi-sp3_1.0.0.g
amd epyc_7351p_firmware naplespi-sp3_1.0.0.g
amd epyc_7351_firmware naplespi-sp3_1.0.0.g
amd epyc_7301_firmware naplespi-sp3_1.0.0.g
amd epyc_7281_firmware naplespi-sp3_1.0.0.g
amd epyc_7261_firmware naplespi-sp3_1.0.0.g
amd epyc_7251_firmware naplespi-sp3_1.0.0.g
amd epyc_7f72_firmware romepi-sp3_1.0.0.c
amd epyc_7f52_firmware romepi-sp3_1.0.0.c
amd epyc_7f32_firmware romepi-sp3_1.0.0.c
amd epyc_7h12_firmware romepi-sp3_1.0.0.c
amd epyc_7742_firmware romepi-sp3_1.0.0.c
amd epyc_7702_firmware romepi-sp3_1.0.0.c
amd epyc_7702p_firmware romepi-sp3_1.0.0.c

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

AMD Ryzen™ Series
AMD Athlon™ Series

Classification

Weakness

CWE-20 Improper Input Validation

References

amd.com /en/corporate/product-security/bulletin/amd-sb-1027
vendor-advisory

Sources

CVE List CVE-2020-12944
NVD CVE-2020-12944

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary