CVE-2026-75131: Nm-l2tp Networkmanager-l2tp

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privilege escalation vulnerability that allows local users with permission to create VPN connections to execute arbitrary code as root by injecting pppd options through a crafted VPN username. Attackers can embed a double-quote character or whitespace in the username to break out of the pppd options file quoting context and include the pppd plugin directive, causing the privileged pppd process to load an attacker-controlled shared object.

Affected products

• Nm-l2tp Networkmanager-l2tp: up to and including 1.52.4

Published 2026-09-23. Last modified 2026-09-24.