{"id":"CVE-2021-26334","aliases":["EUVD-2021-13140","GHSA-4xjc-qqh2-pgwj"],"status":"published","title":"AMD Chipset Driver Information Disclosure Vulnerability","description":"The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.","severity":{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01208,"percentile":0.68766,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-284"],"published":"2021-12-01T15:43:24Z","modified":"2026-06-17T03:43:08Z","products":[{"vendor":"amd","product":"amd_uprof"},{"vendor":"amd","product":"μprof tool"}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1016","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26334"},{"url":"https://github.com/advisories/GHSA-4xjc-qqh2-pgwj"}],"sources":{"cve":[{"id":"CVE-2021-26334","title":"AMD Chipset Driver Information Disclosure Vulnerability","description":"The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.","status":"published","published":"2021-12-01T15:43:24.387Z","modified":"2024-09-17T00:40:38.608Z","cwes":["CWE-284"],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13140","description":"The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.","status":"published","published":"2021-12-01T15:43:24Z","modified":"2024-09-17T00:40:38Z","updated_at":"2026-11-03T00:28:56.965297Z"}],"ghsa":[{"id":"GHSA-4xjc-qqh2-pgwj","title":"The AMDPowerProfiler.sys driver of AMD ?Prof tool may allow lower privileged users to access MSRs...","description":"The AMDPowerProfiler.sys driver of AMD ?Prof tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.","status":"published","published":"2021-12-02T00:00:37Z","modified":"2023-02-01T05:06:45Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:50:24.546925Z"}],"nvd":[{"id":"CVE-2021-26334","description":"The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.","status":"published","published":"2021-12-01T16:15:07.59Z","modified":"2026-06-17T03:43:08.697Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}