Is CVE-2026-44713 actively exploited?

No active exploitation of CVE-2026-44713 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44713 be exploited remotely?

No. CVE-2026-44713 requires local access to exploit.

What is the CVSS score of CVE-2026-44713?

CVE-2026-44713 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2026-44713

HIGH

CVE-2026-44713

CWE-78Published: May 27, 2026· Updated: May 28, 2026

8.8

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:6.8th

Official Description

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, src/tmux.c reads the user's $TMUX environment variable, splits it on commas, and interpolates the socket-path component directly into a shell command passed to popen(). Because the value is placed inside double-quotes without sanitisation, any value containing " terminates the quoted string and injects arbitrary shell syntax. popen() runs as root inside the PAM stack. This vulnerability is fixed in 0.8.7.

NVD Source

Technical Analysis

CVE-2026-44713 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.