9.9

CVE-2021-26334: amd amd_uprof Improper Access Control

CVSS: 9.9v3.1CriticalModified
Published 01-12-2021Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2021-26334 is a critical (CVSS 9.9) Improper Access Control vulnerability in amd amd_uprof. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 67.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (NVD)
EPSS score
1.21%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-12-2021
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.21%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

+0.04 pp

From 1.17% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.21%

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

Amd2 products

1 vendor · 2 products

References

1 links