{"id":"CVE-2015-6856","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-6856","generatedAt":"2026-10-27T17:44:27.960Z","title":"Dell Pre-Boot Authentication Driver (PBADRV.sys) 1.0.1.5 allows local users to write to arbitrary physical memory locations and gain privileges via a 0x0022201c IOCTL call.","description":"Dell Pre-Boot Authentication Driver (PBADRV.sys) 1.0.1.5 allows local users to write to arbitrary physical memory locations and gain privileges via a 0x0022201c IOCTL call.","published":"2016-01-08T19:59:03.000Z","lastModified":"2026-06-17T00:31:32.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":7.8,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-264"],"affected":["dell/pre-boot authentication driver"],"epss":{"score":0.00521,"percentile":0.44,"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 (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/134987/Dell-Authentication-Driver-Uncontrolled-Write.html","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2015/Dec/81","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/537161/100/0/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/79643","source":"cve@mitre.org"},{"url":"https://www.korelogic.com/Resources/Advisories/KL-001-2015-008.txt","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/134987/Dell-Authentication-Driver-Uncontrolled-Write.html","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2015/Dec/81","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/537161/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/79643","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.korelogic.com/Resources/Advisories/KL-001-2015-008.txt","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-6856","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."}