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Vulnerability record · CVE-2026-44712 · published 27 May 2026

CVE-2026-44712: OS command injection vulnerability

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, a crafted UUID such as $(id>/tmp/rce) in the config causes root RCE when pamusb-conf --reset-pads is run. A USB device with a crafted filesystem UUID (some controllers allow this) can inject the payload at --add-device time. Also, userName from the XML config is passed to os.system() in pamusb-agent, which invokes a shell. This vulnerability is fixed in 0.8.7.

8.2 CVSS 3.1 High EPSS 0.21% · top 89.8% CWE-78 · OS command injectionCWE-88 · Argument injection Deferred
8.2CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, a crafted UUID such as $(id>/tmp/rce) in the config causes root RCE when pamusb-conf --reset-pads is run. A USB device with a crafted filesystem UUID (some controllers allow this) can inject the payload at --add-device time. Also, userName from the XML config is passed to os.system() in pamusb-agent, which invokes a shell. This vulnerability is fixed in 0.8.7.

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

References

LinkTags
https://github.com/mcdope/pam_usb/security/advisories/GHSA-jgv5-w6rm-7wxg

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Source: NIST National Vulnerability Database (record CVE-2026-44712), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.