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Back to active CVEs
High · CVSS 7.8CVE-2026-19624

NetworkManager-l2tp: local privilege escalation via ipsec.conf injectionCVE-2026-19624

Answer in brief

CVE-2026-19624 records a High severity (CVSS 7.8) vulnerability in NetworkManager-l2tp: local privilege escalation via ipsec.conf injection. The current sources do not mark it as known exploited. The current feed maps Fedora/Extra Packages for Enterprise Linux (EPEL) (generic), Fedora/Fedora (generic), NetworkManager-l2tp (generic), Fedora/NetworkManager-l2tp (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 14, 2026Updated Sep 18, 2026Source checked Oct 30, 2026First seen by HOL Sep 14, 2026Material review Sep 18, 2026
Upstream Advisory

Record context

Vulnerability class
Privilege Escalation
EPSS
Not reported
CWE IDs
CWE-88
Source
CVE List V5
Source checked
Oct 30, 2026
References
5 linked sources
Open source record

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Fedora/Extra Packages for Enterprise Linux (EPEL) (generic), Fedora/Fedora (generic), NetworkManager-l2tp (generic), Fedora/NetworkManager-l2tp (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Fedora/Extra Packages for Enterprise Linux (EPEL)generic>=1.20.0 <1.20.241.20.24
Fedora/Fedorageneric>=1.52.0 <1.52.41.52.4
NetworkManager-l2tpgeneric>=1.0.0 <1.0.16 || >=1.2.0 <1.2.22 || >=1.8.0 <1.8.10 || >=1.20.0 <1.20.24 || >=1.52.0 <1.52.41.0.16, 1.2.22, 1.8.10, 1.20.24, 1.52.4
Fedora/NetworkManager-l2tpgeneric>=1.52.0 <1.52.41.52.4
Fedora/NetworkManager-l2tpgeneric>=1.20.0 <1.20.241.20.24

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Fedora/Extra Packages for Enterprise Linux (EPEL), Fedora/Fedora, NetworkManager-l2tp.
  2. 2Review the reported fix. Update Fedora/Extra Packages for Enterprise Linux (EPEL) to 1.20.24; Fedora/Fedora to 1.52.4; NetworkManager-l2tp to 1.0.16; Fedora/NetworkManager-l2tp to 1.52.4; Fedora/NetworkManager-l2tp to 1.20.24 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 14, 2026

Sources and claim methodology

  • Source referencebodhi.fedoraproject.org
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencelinnemanlabs.com
Upstream source 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).

Quoted source text, attributed separately from HOL analysis.