23 Oct 2026 15:48:27 UTC
NetworkManager-l2tp: local privilege escalation via ipsec.conf injection
cve-program · CVE-2026-19624 · Published
CVE-2026-19624
NetworkManager-l2tp: local privilege escalation via ipsec.conf injection
CVSS 3.1 7.8 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-19624
PublishedA 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).
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