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Fencer Vulns
high 7.8

CVE-2026-19624 json

NetworkManager-l2tp: local privilege escalation via ipsec.conf injection

published 2026-09-14 55 d ago modified 2026-09-18 51 d ago also EUVD-2026-77774

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

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).

Patch / fix

  • Fedora Fedora 1.52.4
  • Fedora Extra Packages for Enterprise Linux (EPEL) 1.20.24
  • network-manager-l2tp Debian 12 1.20.8-1+deb12u1
  • network-manager-l2tp Debian 13 1.20.20-2+deb13u1
  • network-manager-l2tp Debian 14 1.52.6-1

debian advisories DEBIAN-CVE-2026-19624

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-19624 updated cvss 7.8

NetworkManager-l2tp: NetworkManager-l2tp: local privilege escalation via ipsec.conf injection

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
55 d ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Fedora Fedora
  • Fedora Extra Packages for Enterprise Linux (EPEL)

Classification

Weakness
  • CWE-88 Improper Neutralization of Argument Delimiters in a Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.