CVE-2020-12944 — Insufficient validation of BIOS image length by ASP Firmware could lead to arbitrary code execution

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HIGH

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

Published Nov 16, 2021

7.8

HIGH

CVSS 3.1

EPSS 0.35%

Description

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

Affected products

Vendor AMD Product Athlon™ Series Default
n/a
- Version
  various
  Status
  affected
  Constraints
  -
Vendor AMD Product Ryzen™ Series Default
n/a
- Version
  various
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

AMD

Athlon™ Series

n/a

Version	Status	Constraints
various	affected	-

AMD

Ryzen™ Series

n/a

Version	Status	Constraints
various	affected	-

Remediation

No remediation recorded yet.

Metrics

0.35% 0.00346

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.00346

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Table of values (13 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	0.35% (0.00346)	25.84th	v5 (v2026.06.15)
Jun 15, 2026	0.34% (0.00335)	25.08th	v5 (v2026.06.15)
Mar 17, 2025	0.06% (0.00063)	17.01th	v4 (v2025.03.14)
Dec 12, 2024	0.04% (0.00044)	14.58th	v3 (v2023.03.01)
May 25, 2024	0.04% (0.00044)	12.27th	v3 (v2023.03.01)
Sep 3, 2023	0.04% (0.00044)	10.26th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	1.04% (0.01036)	43.31th	v2 (v2022.01.01)
Apr 1, 2022	1.04% (0.01036)	39.16th	v2 (v2022.01.01)
Mar 31, 2022	2.76% (0.02763)	64.64th	v2 (v2022.01.01)
Jan 6, 2022	3.20% (0.03197)	66.14th	v1
Jan 5, 2022	0.73% (0.00731)	50.76th	v5 (v2026.06.15)
Nov 17, 2021	0.73% (0.00731)	50.13th	v1

Weaknesses (1)

CWE-20

Improper Input Validation

References (1)

https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
x_refsource_MISCVendor Advisory

Link	Providers	Tags
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027		x_refsource_MISCVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner AMD

Published Nov 16, 2021

Updated Sep 16, 2024

Reserved May 15, 2020

Link CVE-2020-12944

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2020-12944

Red Hat

Severity n/a

Public date n/a

Links CVE-2020-12944