CVE-2020-28921

HIGH 8.8CVE-2020-28921 · Published 27/11/2020 · updated 17/06/2026

In short

CVE-2020-28921 is a HIGH (CVSS 8.8) vulnerability affecting pc analyser (pcanalyser).
Chance of exploitation in the next 30 days (EPSS): 0.66%, higher than 51.6% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
pc analyser pcanalyser	`≤ 4.10`	No fix yet

Description

An issue was discovered in Devid Espenschied PC Analyser through 4.10. The PCADRVX64.SYS kernel driver exposes IOCTL functionality that allows low-privilege users to read and write to arbitrary Model Specific Registers (MSRs). This could lead to arbitrary Ring-0 code execution and escalation of privileges.

References

pcanalyser.de/index.php/historie · Release Notes
eset/vulnerability-disclosures · Third Party Advisory
eset/vulnerability-disclosures · Exploit

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