CVE-2026-19624

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-77774 (ENISA EUVD) · GHSA-4533-c5f5-j3h9 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 14, 2026

Last Modified

September 18, 2026

Advisory Details (5)

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

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/
Web page

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.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
network-manager-l2tp1.20.8-1
  • every version up to 1.20.8-1+deb12u1: fixed in 1.20.8-1+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
network-manager-l2tp1.20.20-2
  • every version up to 1.20.20-2+deb13u1: fixed in 1.20.20-2+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
network-manager-l2tp1.20.20-2, 1.52.0-1, 1.52.0-2, 1.52.2-1, 1.52.4-1
  • every version up to 1.52.6-1: fixed in 1.52.6-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 59× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 126 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 26 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-10-28 12:58 UTCEG score recompute
  6. 2026-10-28 12:58 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  7. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-10-25 14:44 UTCEG score recompute
  10. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  13. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-10-21 13:31 UTCEG score recompute
  15. 2026-10-21 13:31 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-10-18 03:57 UTCEG score recompute
  20. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  21. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-10-14 21:36 UTCEG score recompute
  24. 2026-10-14 21:36 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  25. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 75 more
  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-12 16:25 UTCEG score recompute
  4. 2026-10-11 19:43 UTCEG score recompute
  5. 2026-10-11 19:43 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  6. 2026-10-11 17:19 UTCEG score recompute
  7. 2026-10-11 14:51 UTCEG score recompute
  8. 2026-10-11 06:42 UTCEG score recompute
  9. 2026-10-11 06:42 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  10. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-10-10 17:52 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  12. 2026-10-10 05:03 UTCEG score recompute
  13. 2026-10-10 05:03 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  14. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  15. 2026-10-09 16:11 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-08 22:54 UTCEG score recompute
  17. 2026-10-08 22:53 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  18. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-10-08 08:03 UTCEG score recompute
  20. 2026-10-08 08:03 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  21. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-10-07 19:09 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  23. 2026-10-07 03:41 UTCEG score recompute
  24. 2026-10-07 03:41 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  25. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-10-06 14:35 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  27. 2026-10-06 01:42 UTCEG score recompute
  28. 2026-10-06 01:42 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  29. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  30. 2026-10-05 12:53 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  31. 2026-10-05 00:03 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  32. 2026-10-04 11:12 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  33. 2026-10-03 22:23 UTCEG score recompute
  34. 2026-10-03 22:23 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  35. 2026-10-03 09:32 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  36. 2026-10-02 18:48 UTCEG score recompute
  37. 2026-10-02 18:48 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  38. 2026-10-02 05:59 UTCEG score recompute
  39. 2026-10-02 05:59 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  40. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  41. 2026-10-01 17:09 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  42. 2026-10-01 04:01 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  43. 2026-09-30 15:12 UTCEG score recompute
  44. 2026-09-30 15:12 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  45. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-09-30 02:22 UTCEG score recompute
  47. 2026-09-30 02:22 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  48. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  49. 2026-09-29 13:32 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  50. 2026-09-29 00:43 UTCEG score recompute
  51. 2026-09-29 00:43 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  52. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  53. 2026-09-28 11:53 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  54. 2026-09-27 23:04 UTCEG score recompute
  55. 2026-09-27 23:04 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  56. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  57. 2026-09-27 10:14 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  58. 2026-09-26 21:25 UTCEG score recompute
  59. 2026-09-26 21:25 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  60. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  61. 2026-09-26 08:35 UTCEG score recompute
  62. 2026-09-26 08:35 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  63. 2026-09-25 19:38 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  64. 2026-09-25 05:51 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  65. 2026-09-24 17:01 UTCEG score recompute
  66. 2026-09-24 17:01 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  67. 2026-09-24 04:12 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  68. 2026-09-23 15:22 UTCEG score recompute
  69. 2026-09-23 15:22 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  70. 2026-09-23 02:32 UTCEG score recompute
  71. 2026-09-23 02:32 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  72. 2026-09-22 13:42 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  73. 2026-09-22 00:52 UTCEG score recompute
  74. 2026-09-22 00:52 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8
  75. 2026-09-21 12:02 UTCGHSA enrichmentGHSA-4533-c5f5-j3h9 · GitHub severity HIGH · GitHub CVSS 7.8

Frequently asked(5)

What is CVE-2026-19624?
CVE-2026-19624 is a high-severity vulnerability; its CVE record was 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 made public?
CVE-2026-19624 was made public on September 3, 2026: that is the date its CVE record's CNA, Fedora Project, gives for when the vulnerability was made public. The CVE record itself was published on September 14, 2026. EchelonGraph's copy of the record carries a last-modified date of September 18, 2026; the record at its source may have been updated since.
Is CVE-2026-19624 actively exploited?
CVE-2026-19624 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19624?
CVE-2026-19624 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19624?
A fix for CVE-2026-19624 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-19624 are linked in the Vendor Advisories panel on this page.

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