Critical severity · published Dec 1, 2021
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…
9.9
CVSS
1.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AU
Amd Uprof · Amd
before 3.4.494; before 3.4.502 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26334
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26334
Mitigation
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1016
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