PT-2026-50781 · Pam Usb · Pam Usb

Mcdope · CVE-2026-48980 · Published 2026-06-18 · Updated 2026-06-22

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions pam usb versions prior to 0.9.2

Description This software provides hardware authentication for Linux using removable media. A flaw exists where the getenv() function allows environment variable injection into local-check logic via the XRDP SESSION, DISPLAY, and TMUX variables. These variables determine if a session is local or remote. When a PAM module runs within the context of setuid binaries such as sudo or su, getenv() can return values controlled by a local user who has manipulated the process environment.

Recommendations Update to version 0.9.2.

Exploit

Fix

Weakness Enumeration

CWE-454

CWE-807

Related Identifiers

CVE-2026-48980

GHSA-QR83-MF3H-FVQR

Affected Products

Pam Usb

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48980.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-48980 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-48980 · Security Note
• https://github.com/mcdope/pam_usb/releases/tag/0.9.2 · Note
• https://github.com/mcdope/pam_usb/security/advisories/GHSA-qr83-mf3h-fvqr · Note
• https://twitter.com/infoflowcloud/status/2067718061302390935 · Twitter Post
• https://t.me/cveNotify/171806 · Telegram Post
• https://t.me/cveNotify/170736 · Telegram Post
• https://t.me/CVEtracker/57286 · Telegram Post
• https://twitter.com/CVEnew/status/2067717384123695323 · Twitter Post