EUVD-2026-77774
GHSA-4533-c5f5-j3h9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (fedora) · only source for this CVE.
CVSS VectorVendor: fedora
Lifecycle Timeline
3DescriptionCVE.org
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).
AnalysisAI
Local privilege escalation in the NetworkManager-l2tp VPN plugin allows any local user who can create and activate their own L2TP profile to inject a newline into connection properties (vpn.data / vpn.secrets), so the root-running pluto daemon executes an attacker-supplied leftupdown command and yields root on the host. Fedora builds 1.52.0 through 1.52.3 and EPEL builds 1.20.0 through 1.20.23 are affected; fixed versions 1.52.4 and 1.20.24 are published upstream. …
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Same technique Privilege Escalation
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External POC / Exploit Code
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