CVE-2020-28921

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-11-27 · updated 2026-06-17

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.

Affected products

Pcanalyser Pc Analyser: through 4.10

References

http://www.pcanalyser.de/index.php/historie/
https://github.com/eset/vulnerability-disclosures
https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.md
http://www.pcanalyser.de/index.php/historie/
https://github.com/eset/vulnerability-disclosures
https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.md

Get alerted when CVE-2020-28921 or the next vulnerability affects your stack