Description
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, symlink attacks on pad directory and pad files enable authentication bypass and root file corruption. This vulnerability is fixed in 0.8.7.
References2
Metrics
- CVSS 3.1
-
7.9
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H - EPSS — exploit probability
- 0% percentile: 15 · as of 15 November 2026
- CWE
- CWE-59CWE-287
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.