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CVE-2015-6856
Dell Pre-Boot Authentication Driver (PBADRV.sys) 1.0.1.5 allows local users to write to arbitrary physical memory locations and gain…
- 7.8HighCVSS base score
- 0.52%Exploitation in 30 daysEPSS · top 55% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
- 4 months later
· 4 months later
Published
- 9 years later
· 9 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.52% · top 55% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
5
- https://www.korelogic.com/Resources/Advisories/KL-001-2015-008.txt (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/134987/Dell-Authentication-Driver-Uncontrolled-Write.html (opens in a new tab)x_refsource_MISCx_transferred
- 20151218 KL-001-2015-008 : Dell Pre-Boot Authentication Driver Uncontrolled Write to Arbitrary Address (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 79643 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20151218 KL-001-2015-008 : Dell Pre-Boot Authentication Driver Uncontrolled Write to Arbitrary Address (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2015-6792 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2015-6856)Record last updated .