CVE-2026-19624NetworkManager-l2tp: local privilege escalation via ipsec.conf injection
Updated under an hour ago ()
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It affects Fedora and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-88
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- fedora
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Fedora Fedora fedora:fedora (from the name) | from 1.52.0 before 1.52.4 | CNA record |
Fedora Extra Packages for Enterprise Linux (EPEL) fedora:extra_packages_for_enterprise_linux_epel (from the name) | from 1.20.0 before 1.20.24 | CNA record |
References
- https://github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91cpatch
- https://github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673patch
- https://github.com/nm-l2tp/NetworkManager-l2tp/releasesrelease-notes
- https://bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tpvendor-advisory
- https://linnemanlabs.com/posts/nm-l2tp-newline-to-root/third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.