What is CVE-2021-26334?

CVE-2021-26334 is a critical-severity vulnerability in Amd Amd_uprof, classified under Improper Access Control. CVSS score: 9.9/10. Published 2021-12-01.

How severe is CVE-2021-26334?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Amd Amd_uprof

CVE-2021-26334

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.

EPSS: 0.012 (63.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Amd Amd_uprof
Amd Μprof Tool — versions μProf Tool
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

psirt@amd.com (x_refsource_MISC, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26334?: CVE-2021-26334 is a critical-severity vulnerability in Amd Amd_uprof, classified under Improper Access Control. CVSS score: 9.9/10. Published 2021-12-01.
How severe is CVE-2021-26334?: Critical severity. CVSS v3 base score is 9.9 out of 10.