{"id":"CVE-2021-39301","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-39301","generatedAt":"2026-10-27T19:57:26.370Z","title":"Potential vulnerabilities have been identified in UEFI firmware (BIOS) for some PC products which may allow escalation of privilege and arbitrary code execution.","description":"Potential vulnerabilities have been identified in UEFI firmware (BIOS) for some PC products which may allow escalation of privilege and arbitrary code execution.","published":"2022-02-16T17:15:11.000Z","lastModified":"2026-10-07T19:17:30.000Z","status":"Modified","sourceIdentifier":"hp-security-alert@hp.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"cwe":["CWE-269"],"affected":["hp/z1 entry tower g5 workstation firmware","hp/z1 entry tower g6 workstation firmware","hp/z1 g8 tower desktop pc firmware","hp/z4 g4 workstation \\(core-x\\) firmware","hp/z4 g4 workstation \\(xeon w\\) firmware","hp/z6 g4 workstation firmware","hp/z8 g4 workstation firmware","hp/engage flex mini retail system firmware","hp/mp9 g4 retail system firmware","hp/elite dragonfly firmware","hp/elite dragonfly g2 firmware","hp/elite dragonfly max firmware","hp/elite x2 1013 g3 firmware","hp/elite x2 g4 firmware","hp/elite x2 g8 tablet firmware","hp/elitebook 1050 g1 firmware","hp/elitebook 830 g5 firmware","hp/elitebook 830 g6 firmware","hp/elitebook 830 g7 firmware","hp/elitebook 830 g8 firmware","hp/elitebook 836 g5 firmware","hp/elitebook 836 g6 firmware","hp/elitebook 840 aero g8 firmware","hp/elitebook 840 g5 firmware","hp/elitebook 840 g5 healthcare edition firmware","hp/elitebook 840 g6 firmware","hp/elitebook 840 g6 healthcare edition firmware","hp/elitebook 840 g7 firmware","hp/elitebook 840 g8 firmware","hp/elitebook 840r g4 firmware","hp/elitebook 846 g5 firmware","hp/elitebook 850 g5 firmware","hp/elitebook 850 g6 firmware","hp/elitebook 850 g7 firmware","hp/elitebook 850 g8 firmware","hp/elitebook x360 1030 g3 firmware","hp/elitebook x360 1030 g4 firmware","hp/elitebook x360 1030 g7 firmware","hp/elitebook x360 1030 g8 firmware","hp/elitebook x360 1040 g5 firmware","hp/elitebook x360 1040 g6 firmware","hp/elitebook x360 1040 g7 firmware","hp/elitebook x360 1040 g8 firmware","hp/elitebook x360 830 g5 firmware","hp/elitebook x360 830 g6 firmware","hp/elitebook x360 830 g7 firmware","hp/elitebook x360 830 g8 firmware","hp/probook 430 g5 firmware","hp/probook 430 g6 firmware","hp/probook 430 g7 firmware","hp/probook 430 g8 firmware","hp/probook 440 g5 firmware","hp/probook 440 g6 firmware","hp/probook 440 g7 firmware","hp/probook 440 g8 firmware","hp/probook 450 g5 firmware","hp/probook 450 g6 firmware","hp/probook 450 g7 firmware","hp/probook 450 g8 firmware","hp/probook 470 g5 firmware"],"epss":{"score":0.00385,"percentile":0.32271,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://support.hp.com/us-en/document/ish_5661066-5661090-16","tags":["Patch","Vendor Advisory"],"source":"hp-security-alert@hp.com"},{"url":"https://support.hp.com/us-en/document/ish_5661066-5661090-16","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-39301","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}