5.5

CVE-2021-26371: amd 1st gen amd epyc™ processors

CVSS: 5.5v3.1MediumModified
Published 09-05-2023Last modified 28-01-2025
Open JSON

Vulnerability summary

CVE-2021-26371 is a medium (CVSS 5.5) vulnerability in amd 1st gen amd epyc™ processors. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-05-2023
    PublishedVulnerability first disclosed.
  2. 28-01-2025
    Last modifiedVulnerability information updated.

Description

A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information disclosure.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Amd141 products

1 vendor · 141 products

References

2 links