CVE-2020-28921: n/a vulnerability

CVE-2020-28921: An issue was discovered in Devid Espenschied PC Analyser through 4.10.

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 4, 2024, 16:40 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2020-28921 is a local privilege-escalation issue in Devid Espenschied PC Analyser through 4.10. A low-privilege user could abuse its kernel driver to reach Ring-0 privileges. Business risk is highest on Windows endpoints where this diagnostic tool or its driver is installed. Exposure appears limited to systems with Devid Espenschied PC Analyser through 4.10 or the PCADRVX64.SYS driver installed. The CVE affected-product metadata is incomplete, so validate using endpoint inventory rather than relying on scanner CPE matching alone. Prioritize as high for endpoint hardening if the tool exists in the environment. The issue needs local access and specific software, but the potential outcome is kernel-level privilege escalation. Start with inventory and removal of unnecessary deployments. Mitigation focus: Inventory systems for PC Analyser and PCADRVX64.SYS.; Remove or disable the driver where the tool is not required.; Check vendor history and ESET disclosure for corrected-version guidance..

Prepared: Jun 5, 2026, 13:31 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Execution behavior lookup

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CVE-2020-28921 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 27, 2020, 17:52 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://github.com/eset/vulnerability-disclosuresCVE reference · x_refsource_MISC
https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.mdCVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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