CVE-2026-44711 | BDVDB-2026-335502 Detail

mcdopepam_usb

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

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

References#

Exploit#

https://github.com/uniget-org/cli/security/advisories/GHSA-qqq4-5773-pmw5

History#

Version 12026-05-27Record published in the CVE List.
Version 22026-05-28Most recent update recorded in the CVE List.

Published

Published: 2026-05-27
Last modified: 2026-05-28

Vendor information

Vendor: mcdope
Product: pam_usb

All mcdope vulnerabilities

Score

7.9 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 14.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 0.8.7
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.9 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	Required
Scope	Changed
Confidentiality	None
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).