CVE-2026-44712
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
8.2
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-05-27 21:16:18.213000
Last modified
2026-10-26 12:10:00.130000
View original CVE JSON
{
"id": "CVE-2026-44712",
"sourceIdentifier": "[email protected]",
"published": "2026-05-27T21:16:18.213",
"lastModified": "2026-10-26T12:10:00.130",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "pam_usb proporciona autenticación de hardware para Linux utilizando medios extraíbles comunes. Antes de la versión 0.8.7, un UUID manipulado como $(id>/tmp/rce) en la configuración causa RCE de root cuando se ejecuta pamusb-conf --reset-pads. Un dispositivo USB con un UUID de sistema de archivos manipulado (algunos controladores lo permiten) puede inyectar la carga útil en el momento de --add-device. Además, el userName de la configuración XML se pasa a os.system() en pamusb-agent, lo que invoca una shell. Esta vulnerabilidad está corregida en la versión 0.8.7."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "mcdope",
"product": "pam_usb",
"versions": [
{
"version": "< 0.8.7",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "HIGH",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.5,
"impactScore": 6.0
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-05-28T13:16:06.876396Z",
"id": "CVE-2026-44712",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-78"
},
{
"lang": "en",
"value": "CWE-88"
}
]
}
],
"references": [
{
"url": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-jgv5-w6rm-7wxg",
"source": "[email protected]"
}
]
}