Vulnerability details

CVE-2026-44711

mcdope pam_usb

pam_usb: Symlink attacks on pad directory and pad files enable authentication bypass and root file corruption

CVSS 3.1

7.9High

Official 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.

CVSS scores

Score	Version	Source	Vector
7.9High	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
mcdope	pam_usb	< 0.8.7	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/mcdope/pam_usb/security/advisories/GHSA-fjpm-p9pj-mp34 x_refsource_CONFIRM
https://github.com/uniget-org/cli/security/advisories/GHSA-qqq4-5773-pmw5 exploit

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Details

Published: 2026-05-27
Last updated: 2026-05-28
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.23%

Probability of exploitation in 30 days

14.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-59
Improper Link Resolution Before File Access ('Link Following')
CWE-287
Improper Authentication