CVE Watch26 oct 2026

CVE-2026-47274

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, multiple pam_usb helper tools resolved ex

CVSS

6.3

Medio

EPSS

0.1%

KEV

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Exploit Today

0-100

Publicado: 27 may 2026 · Última mod.: 26 oct 2026 · CWE-427

EPSS · 30d

0.1%EPSS · 30 días0.2%

2026-09-302026-10-27

Descripción técnica

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, multiple pam_usb helper tools resolved external binaries through the PATH environment variable rather than using absolute paths. An attacker who can influence the process environment during PAM authentication or tool execution could substitute malicious binaries. The affected tools are pamusb-check (src/tmux.c), pamusb-conf (tools/pamusb-conf), and pamusb-keyring-unlock-gnome (tools/pamusb-keyring-unlock-gnome). This vulnerability is fixed in 0.9.0.

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