CVE-2026-19624

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-14. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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).

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 18, 2026

Advisory Details (5)

Auto-updated Sep 14, 2026
Patch available. Sources: github_commit.
generic

A Newline to Root: CVE-2026-19624 - Unconfined root from NetworkManager-l2tp via ipsec.conf injection · Linneman Labs

https://linnemanlabs.com/posts/nm-l2tp-newline-to-root/
generic

Fedora Updates System

https://bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tp
generic

Releases · nm-l2tp/NetworkManager-l2tp · GitHub

https://github.com/nm-l2tp/NetworkManager-l2tp/releases
github_commit Patch Available

commit 3704d8c9d5e5 (nm-l2tp/NetworkManager-l2tp)

Patch available: nm-l2tp/NetworkManager-l2tp 1.52.4 (contains commit 3704d8c9d5e5)

https://github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673
github_commit Patch Available

commit 95b6b46f48a0 (nm-l2tp/NetworkManager-l2tp)

Patch available: nm-l2tp/NetworkManager-l2tp 1.52.4 (contains commit 95b6b46f48a0)

https://github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91c

Vendor Advisories for CVE-2026-19624(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 08:41 UTCGHSA enrichment
  2. 2026-09-18 19:48 UTCEG score recompute
  3. 2026-09-18 19:48 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 14:16 UTCGHSA enrichment
  6. 2026-09-18 01:26 UTCEG score recompute
  7. 2026-09-18 01:26 UTCGHSA enrichment
  8. 2026-09-17 12:35 UTCGHSA enrichment
  9. 2026-09-16 23:41 UTCEG score recompute
  10. 2026-09-16 23:41 UTCGHSA enrichment
  11. 2026-09-16 14:07 UTCEPSS rescore
  12. 2026-09-16 10:51 UTCEG score recompute
  13. 2026-09-16 10:51 UTCGHSA enrichment
  14. 2026-09-16 05:14 UTCEPSS rescore
  15. 2026-09-15 22:02 UTCGHSA enrichment
  16. 2026-09-15 09:12 UTCEG score recompute
  17. 2026-09-15 09:12 UTCGHSA enrichment
  18. 2026-09-14 20:23 UTCEG score recompute
  19. 2026-09-14 19:49 UTCEG score recompute
  20. 2026-09-14 19:30 UTCEG score recompute
  21. 2026-09-14 19:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19624?
CVE-2026-19624 is a high vulnerability published on September 14, 2026. 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…
When was CVE-2026-19624 disclosed?
CVE-2026-19624 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19624 actively exploited?
CVE-2026-19624 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.0% of all scored CVEs.
What is the CVSS score of CVE-2026-19624?
CVE-2026-19624 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-19624?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19624, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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