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CVE-2026-44711

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

Published: May 27, 2026Updated: May 27, 2026 Sources: CVE List NVD
NVD MITRE
7.9CVSS
HIGH

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:LAC:LPR:LUI:RS:CC:NI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-59CWE-287

Affected Products

pam_usb
mcdope

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

4 techniques
Collection
Discovery
Initial Access
View detailed technique mapping

References

https://github.com/mcdope/pam_usb/security/advisories/GHSA-fjpm-p9pj-mp34
github.com

Timeline

Published
May 27, 2026
Last Updated
May 27, 2026

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