CVE-2026-37459

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-04. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
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%CVSS: 7.5Exploit: None knownExposed: 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)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

May 4, 2026

Last Modified

July 15, 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(3)

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) @ resolute2026-08-23ubuntu
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.

Affected Packages

(2 across 2 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
frr10.0-0.1 ... 9.1-0.1 (59 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
frr10.3-3 ... 10.6.0-1 (19 versions)10.6.0-2—

Weakness Classification(2)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 239 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

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 July 15, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 69.0% of all scored CVEs.
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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