CVE-2026-37459

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-04. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
29.3%
KEV
Not listed

Published

May 4, 2026

Last Modified

June 30, 2026

Advisory Details (1)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

bgpd: Check if the NHC length is enough to fill TLV value + TLV header · FRRouting/frr@693a2e0 · GitHub

https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9

Vendor Advisories for CVE-2026-37459(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntufrr-snmp (10.5.1-1ubuntu4.1) @ resolute2026-06-14ubuntu
redhatfrr10-0:10.4.3-3.el9_82026-06-08redhat
redhatfrr-0:10.4.4-1.el10_22026-06-08redhat

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.

Weakness Classification(2)

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

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 42× 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 138 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-37459?
CVE-2026-37459 is a high vulnerability published on May 4, 2026. An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
When was CVE-2026-37459 disclosed?
CVE-2026-37459 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-37459 actively exploited?
CVE-2026-37459 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-37459?
CVE-2026-37459 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-37459?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-37459, 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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