Vulnerability details
CVE-2026-44712
mcdope pam_usb
pam_usb: Shell injection via device UUID and username in pamusb-conf and pamusb-agent
CVSS 3.1
8.2High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.2High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| mcdope | pam_usb | < 0.8.7 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://github.com/mcdope/pam_usb/security/advisories/GHSA-jgv5-w6rm-7wxg x_refsource_CONFIRM
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Details
- Published
- 2026-05-27
- Last updated
- 2026-05-28
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.15%
Probability of exploitation in 30 days
4.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
- CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')