CVE-2020-28921 json
An issue was discovered in Devid Espenschied PC Analyser through 4.10.
published 2020-11-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21312
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
References
-
github.com
/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.md
exploit, third-party-advisory
-
pcanalyser.de
/index.php/historie/
release-notes, vendor-advisory
-
github.com
/eset/vulnerability-disclosures
third-party-advisory
Sources
- CVE List CVE-2020-28921
- NVD CVE-2020-28921
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.