{"schemaVersion":3,"id":"CVE-2026-19624","aliases":["UBUNTU-CVE-2026-19624","DEBIAN-CVE-2026-19624"],"status":"published","duplicateOf":null,"title":null,"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).","dates":{"published":"2026-09-14T19:19:43.736Z","modified":"2026-09-14T19:43:32.531Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.8,"severity":"high","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":7.8,"severity":"high","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":4.6,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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1.52.6-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"network-manager-l2tp","name":"network-manager-l2tp","label":"network-manager-l2tp","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/network-manager-l2tp","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"fedora","product":"extra packages for enterprise linux (epel)","name":"Extra Packages for Enterprise Linux (EPEL)","label":"extra packages for enterprise linux (epel)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.20.0, < 1.20.24","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.20.0, < 1.20.24","eol":null,"hubHref":"/vendor/fedora/extra_packages_for_enterprise_linux_epel"},{"vendor":"fedora","product":"fedora","name":"Fedora","label":"fedora","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.52.0, < 1.52.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.52.0, < 1.52.4","eol":null,"hubHref":"/vendor/fedora/fedora"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91c","label":"github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91c","hostname":"github.com","tags":["Patch"]},{"url":"https://github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673","label":"github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673","hostname":"github.com","tags":["Patch"]},{"url":"https://github.com/nm-l2tp/NetworkManager-l2tp/releases","label":"github.com/nm-l2tp/NetworkManager-l2tp/releases","hostname":"github.com","tags":["Release Notes"]},{"url":"https://bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tp","label":"bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tp","hostname":"bodhi.fedoraproject.org","tags":["Vendor Advisory"]},{"url":"https://linnemanlabs.com/posts/nm-l2tp-newline-to-root/","label":"linnemanlabs.com/posts/nm-l2tp-newline-to-root/","hostname":"linnemanlabs.com","tags":["Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-19624","label":"ubuntu.com/security/CVE-2026-19624","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-19624","label":"www.cve.org/CVERecord?id=CVE-2026-19624","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-19624","label":"security-tracker.debian.org/tracker/CVE-2026-19624","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-14T19:19:43.736Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-14T19:43:32.531Z","label":"Last modified","detail":"Vulnerability information 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