CVE-2021-26334
CVE-2021-26334 is a critical-severity vulnerability in Amd Amd Uprof with a CVSS 3.x base score of 9.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.
Key facts
- Severity: Critical (CVSS 3.x base score 9.9)
- CVSS v2: 9.0
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-284
- Affected product: Amd Amd Uprof
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2021-26334?
- CVE-2021-26334 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-26334 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-26334?
- CVE-2021-26334 affects Amd Amd Uprof. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-26334?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-26334 published?
- CVE-2021-26334 was published on 2021-12-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:amd:amd_uprof:*:*:*:*:*:*:*:*
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