CVEvulnerability
CVE-2026-19624
7.8 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-14
- Last modified
- 2026-09-18
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-88
Description
A flaw was found in NetworkManager-l2tp. The plugin writes attacker-controlled VPN connection properties (vpn.data and vpn.secrets values) unescaped into a generated ipsec.conf file that pluto loads as root. A local unprivileged user can create and activate their own L2TP VPN profile containing a newline-injected leftupdown directive; pluto executes that command as root when the IKE security association is established, resulting in local privilege escalation. This is the same bug class as CVE-2018-10900 (NetworkManager-vpnc).
Related
Weakness · CWE (1)
- CWE-88 Improper Neutralization of Argument Delimiters in a Command weakness
References
- https://bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tp bodhi.fedoraproject.org
- https://github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673 github.com
- https://github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91c github.com
- https://github.com/nm-l2tp/NetworkManager-l2tp/releases github.com
- https://linnemanlabs.com/posts/nm-l2tp-newline-to-root/ linnemanlabs.com