CVE-2026-19624
NetworkManager-l2tp: local privilege escalation via ipsec.conf injection
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).
INFO
Published Date :
Sept. 14, 2026, 7:19 p.m.
Last Modified :
Sept. 14, 2026, 7:19 p.m.
Remotely Exploit :
No
Source :
fedora
Affected Products
The following products are affected by CVE-2026-19624
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5 |
Solution
- Update NetworkManager-l2tp package to the latest version.
- Sanitize user-supplied VPN connection data.
- Validate ipsec.conf content before loading.
- Restart NetworkManager service.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-19624 vulnerability anywhere in the article.