CVE-2026-12413

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

Published

July 2, 2026

Last Modified

July 8, 2026

Advisory Details (2)

Auto-updated Jul 3, 2026
Patch available.
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(14)

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

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhcos-4.19.9.6.202609021231-02026-09-09redhat
redhatrhcos-4.21.9.6.202609021100-02026-09-08redhat
redhatrhcos-4.20.9.6.202609021029-02026-09-08redhat
redhatlibreswan-0:4.9-5.el9_2.52026-08-31redhat
redhatlibreswan-0:4.12-3.el9_4.22026-08-31redhat
redhatlibreswan-0:4.15-8.el9_6.12026-08-20redhat
redhatlibreswan-0:5.2-1.el10_0.52026-08-17redhat
redhatlibreswan-0:4.12-2.el8_10.62026-07-27redhat
redhatlibreswan-0:4.15-10.el9_82026-07-27redhat
redhatlibreswan-0:5.3.2-1.el10_22026-07-27redhat
redhatlibreswan-0:5.3.2-1.el9fdp2026-07-27redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libreswan4.10-1 ... 5.2-2.4 (27 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libreswan4.10-2 ... 5.2-2.5 (18 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libreswan5.2-2.2, 5.2-2.3, 5.2-2.4, 5.2-2.5
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libreswan5.2-2.2, 5.2-2.3, 5.2-2.4
  • every version up to 5.2-2.5: fixed in 5.2-2.5
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 36× 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.

Showing the most recent 100 of 300 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

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 on July 2, 2026, with the most recent update on July 8, 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 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12413?
CVE-2026-12413 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-12413?
A fix for CVE-2026-12413 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-12413 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-12413

Explore →

Is Your Infrastructure Affected by CVE-2026-12413?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs