CVE-2026-19624
NetworkManager-l2tp: local privilege escalation via ipsec.conf injection
- Published
- Updated
- Reserved
- Assigned by
- fedora
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).
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| fedoraCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
NetworkManager-l2tp
- affected 1.0.0 – < 1.0.16
- affected 1.2.0 – < 1.2.22
- affected 1.8.0 – < 1.8.10
- affected 1.20.0 – < 1.20.24
- affected 1.52.0 – < 1.52.4
- affected 1.52.0 – < 1.52.4
Fedora · Extra Packages for Enterprise Linux (EPEL)
- affected 1.20.0 – < 1.20.24
References (5)
- https://github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91c (opens in a new tab)patch
- https://github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673 (opens in a new tab)patch
- https://github.com/nm-l2tp/NetworkManager-l2tp/releases (opens in a new tab)release-notes
- https://bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tp (opens in a new tab)vendor-advisory
- https://linnemanlabs.com/posts/nm-l2tp-newline-to-root/ (opens in a new tab)third-party-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-19624)Record last updated .