{"id":"CVE-2026-19624","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-19624","generatedAt":"2026-10-28T03:28:54.579Z","title":"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.","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).","published":"2026-09-14T20:16:44.000Z","lastModified":"2026-09-18T19:34:37.000Z","status":"Awaiting Analysis","sourceIdentifier":"patrick@puiterwijk.org","cvss":{"version":"3.1","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"},"cwe":["CWE-88"],"affected":[],"epss":{"score":0.0013,"percentile":0.0262,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tp","source":"patrick@puiterwijk.org"},{"url":"https://github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673","source":"patrick@puiterwijk.org"},{"url":"https://github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91c","source":"patrick@puiterwijk.org"},{"url":"https://github.com/nm-l2tp/NetworkManager-l2tp/releases","source":"patrick@puiterwijk.org"},{"url":"https://linnemanlabs.com/posts/nm-l2tp-newline-to-root/","source":"patrick@puiterwijk.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-19624","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}