CVE-2026-19624highCWE-88

CVE-2026-19624: high-severity vulnerability in NetworkManager-l2tp

NetworkManager-l2tp: local privilege escalation via ipsec.conf injection

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.1%
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).
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
NetworkManager-l2tpFedora · Extra Packages for Enterprise Linux (EPEL)Fedora · Fedora
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