3.9

CVE-2021-26387: amd amd epyc™ 7001 series processors Incorrect Authorization

CVSS: 3.9v3.1LowDeferred
Published 13-08-2024Last modified 30-10-2024
Open JSON

Vulnerability summary

CVE-2021-26387 is a low (CVSS 3.9) Incorrect Authorization vulnerability in amd amd epyc™ 7001 series processors. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.4% of scored vulnerabilities.

Overall risk
16/100
0100
Low · default modelHow is this calculated?
CVSS score
3.9/10
010
Low · v3.1 (CVE.org)
EPSS score
0.15%
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. 13-08-2024
    PublishedVulnerability first disclosed.
  2. 30-10-2024
    Last modifiedVulnerability information updated.

Description

Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

0.00 pp

From 0.15% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.15%

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

Affected systems

Amd8 products

1 vendor · 8 products

References

2 links