CVE-2026-44712 HIGH

CVE-2026-44712: pam_usb: Shell injection via device UUID and username in pamusb-conf and pamusb-agent

Vendor Mcdope
Product pam_usb
Weakness CWE-78
Published May 27, 2026
Last update May 28, 2026
View on NVD All CVEs

CVSS base score

8.2/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 27, 2026 CVE published
May 28, 2026 Record updated