CVE-2026-19624Public exploit

Local privilege escalation via ipsec.conf newline injection

Published Sep 14, 2026 · Updated Sep 14, 2026

Command injection in NetworkManager-l2tp allows local users to execute commands as root through a crafted L2TP VPN profile. nm-l2tp-service accepts control characters in VPN data and secret values, writes them unescaped into ipsec.conf, and lets a newline inject a leftupdown command that the IPsec daemon runs as root. Exploitation requires an unprivileged logged-in user to create and activate an L2TP/IPsec profile; successful execution grants unrestricted root access.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in NetworkManager-l2tp allows local users to execute commands as root through a crafted L2TP VPN profile. nm-l2tp-service accepts control characters in VPN data and secret values, writes them unescaped into ipsec.conf, and lets a newline inject a leftupdown command that the IPsec daemon runs as root. Exploitation requires an unprivileged logged-in user to create and activate an L2TP/IPsec profile; successful execution grants unrestricted root access.

The record

CVE
CVE-2026-19624
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
nm-l2tp
Product
NetworkManager-l2tp
Classifications
T1059.004, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <1.0.16
  2. Affected versionversion=1.20.0 <1.20.24
  3. Affected versionversion=1.2.0 <1.2.22
  4. Affected versionversion=1.52.0 <1.52.4
  5. Affected versionversion=1.8.0 <1.8.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

nm-l2tp · NetworkManager-l2tpversion=1.0.0 <1.0.16; version=1.20.0 <1.20.24; version=1.2.0 <1.2.22; version=1.52.0 <1.52.4; version=1.8.0 <1.8.10
Fedora Project · Fedora Linuxversion=1.52.0 <1.52.4
Fedora Project · Extra Packages for Enterprise Linux (EPEL)version=1.20.0 <1.20.24

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059.004Unix Shell
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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