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).
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-6498-1 | network-manager-l2tp security update |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 14 Sep 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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). | |
| Title | NetworkManager-l2tp: local privilege escalation via ipsec.conf injection | |
| Weaknesses | CWE-88 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: fedora
Published:
Updated: 2026-09-14T19:43:32.531Z
Reserved: 2026-08-12T14:50:47.790Z
Link: CVE-2026-19624
Updated: 2026-09-14T19:43:28.438Z
Status : Received
Published: 2026-09-14T20:16:43.593
Modified: 2026-09-14T20:16:43.593
Link: CVE-2026-19624
No data.
OpenCVE Enrichment
No data.
Weaknesses
Debian DSA