Vulnerability in Fedora Extra Packages For Enterprise Linux (Epel)
CVE-2026-19624
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f2191… (patch)
- github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a0424… (patch)
- github.com/nm-l2tp/NetworkManager-l2tp/releases (release-notes)
- bodhi.fedoraproject.org/updates/ (vendor-advisory)
- linnemanlabs.com/posts/nm-l2tp-newline-to-root/ (third-party-advisory)
Frequently asked questions
- What is CVE-2026-19624?
- CVE-2026-19624 is a high-severity vulnerability in Fedora Extra Packages For Enterprise Linux (Epel), classified under Argument Injection. CVSS score: 7.8/10. Published 2026-09-14.
- How severe is CVE-2026-19624?
- High severity. CVSS v3 base score is 7.8 out of 10.