{"cve":"CVE-2015-6856","nvd":{"published":"2016-01-08T19:59:02.707","modified":"2026-06-17T00:31:32.273","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-264"],"references":["http://packetstormsecurity.com/files/134987/Dell-Authentication-Driver-Uncontrolled-Write.html","http://seclists.org/fulldisclosure/2015/Dec/81","http://www.securityfocus.com/archive/1/537161/100/0/threaded","http://www.securityfocus.com/bid/79643","https://www.korelogic.com/Resources/Advisories/KL-001-2015-008.txt"],"products":["dell:pre-boot_authentication_driver"],"source":"nvd","synced_at":"2026-10-19T20:37:48.328043465+00:00"},"epss":{"cve":"CVE-2015-6856","score":0.00521,"percentile":0.44287,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}