CVE-2026-12413

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-03. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

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

An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploitation would cause a denial of service. The function reassemble_v2_incoming_fragments() would ignore unknown outer payloads but still store these in a fixed size array msg_digest.digest[PAYLIMIT]. An off-by-one error in the assertion PASSERT(logger, md->digest_roof < elemsof(md->digest)) causes the daemon to abort. No remote code execution is possible. Any configuration that allows IKEv2 connections that do not set fragmentation=no are vulnerable. IKEv1 is not affected.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
44.3%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 6, 2026

Advisory Details (2)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic
https://libreswan.org/security/CVE-2026-12413/CVE-2026-12413.txt
generic

Index of /security/CVE-2026-12413/

https://libreswan.org/security/CVE-2026-12413/

Vendor Advisories for CVE-2026-12413(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 22× 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. 2026-07-07 03:41 UTCEG score recompute
  2. 2026-07-07 03:41 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 15:12 UTCEG score recompute
  5. 2026-07-06 15:11 UTCGHSA enrichment
  6. 2026-07-06 02:44 UTCEG score recompute
  7. 2026-07-06 02:43 UTCGHSA enrichment
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 14:17 UTCEG score recompute
  10. 2026-07-05 14:17 UTCGHSA enrichment
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-05 01:51 UTCEG score recompute
  14. 2026-07-05 01:51 UTCGHSA enrichment
  15. 2026-07-04 13:26 UTCEG score recompute
  16. 2026-07-04 13:26 UTCGHSA enrichment
  17. 2026-07-04 01:00 UTCEG score recompute
  18. 2026-07-04 01:00 UTCGHSA enrichment
  19. 2026-07-03 12:35 UTCEG score recompute
  20. 2026-07-03 12:35 UTCGHSA enrichment
  21. 2026-07-03 00:07 UTCEG score recompute
  22. 2026-07-03 00:06 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-12413?
CVE-2026-12413 is a high vulnerability published on July 2, 2026. An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploitation would cause a denial of service. The function reassemblev2incomingfragments() would ignore unknown outer payloads but still store these in a fixed size array…
When was CVE-2026-12413 disclosed?
CVE-2026-12413 was first published in the National Vulnerability Database on July 2, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12413 actively exploited?
CVE-2026-12413 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 44.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12413?
CVE-2026-12413 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-12413?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12413, 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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