{"id":"CVE-2020-28921","aliases":["EUVD-2020-21312","GHSA-pfq8-gmrx-7h6x"],"status":"published","title":"An issue was discovered in Devid Espenschied PC Analyser through 4.10. The PCADRVX64.SYS kernel...","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.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00656,"percentile":0.51915,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2020-11-27T17:52:15Z","modified":"2026-06-17T03:10:49Z","products":[{"vendor":"pcanalyser","product":"pc_analyser"}],"references":[{"url":"https://github.com/eset/vulnerability-disclosures","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"http://www.pcanalyser.de/index.php/historie/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-28921/CVE-2020-28921.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28921"},{"url":"https://github.com/advisories/GHSA-pfq8-gmrx-7h6x"}],"sources":{"cve":[{"id":"CVE-2020-28921","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.","status":"published","published":"2020-11-27T17:52:15Z","modified":"2024-08-04T16:40:59.951Z","updated_at":"2026-11-02T14:35:57.017407Z"}],"euvd":[{"id":"EUVD-2020-21312","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.","status":"published","published":"2020-11-27T17:52:15Z","modified":"2024-08-04T16:40:59Z","updated_at":"2026-11-03T03:07:09.169254Z"}],"ghsa":[{"id":"GHSA-pfq8-gmrx-7h6x","title":"An issue was discovered in Devid Espenschied PC Analyser through 4.10. The PCADRVX64.SYS kernel...","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.","status":"published","published":"2022-05-24T17:35:01Z","modified":"2023-01-29T05:04:52Z","cwes":["CWE-269"],"updated_at":"2026-11-02T14:45:39.24589Z"}],"nvd":[{"id":"CVE-2020-28921","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.","status":"published","published":"2020-11-27T18:15:11.767Z","modified":"2026-06-17T03:10:49.763Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:25.394006Z"}]}}