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CVE PROGRAM SOURCE RECORD8.5 High

CVE-2026-75131

NetworkManager-l2tp Privilege Escalation via pppd Username Injection

Description

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

nm-l2tp NetworkManager-l2tp

Default version status: unaffected

  • 0 to ≤ 1.52.4affected
  • 1.52.6unaffected
pkg:github/nm-l2tp/NetworkManager-l2tp

References