RCE in Mcdope Pam Usb
CVE-2026-44712
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.002 (4.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Mcdope Pam_usb — versions < 0.8.7
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-44712?
- CVE-2026-44712 is a high-severity vulnerability in Mcdope Pam Usb, classified under OS Command Injection. CVSS score: 8.2/10. Published 2026-05-27.
- How severe is CVE-2026-44712?
- High severity. CVSS v3 base score is 8.2 out of 10.