VulnerabilityModified
CVE-2020-28921
The PCADRVX64.SYS kernel driver exposes IOCTL functionality that allows low-privilege users to read and write to arbitrary Model Specific Registers (MSRs).
HIGH 8.8EPSS 0.66%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.66% probability · 49th percentile
- CISA KEV
- Not listed
- Affected
- pcanalyser/pc analyser
- Source
- cve@mitre.org
References
- http://www.pcanalyser.de/index.php/historie/Release Notes, Vendor Advisory
- https://github.com/eset/vulnerability-disclosuresThird Party Advisory
- https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.mdExploit, Third Party Advisory
- http://www.pcanalyser.de/index.php/historie/Release Notes, Vendor Advisory
- https://github.com/eset/vulnerability-disclosuresThird Party Advisory
- https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.mdExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.