CVE-2024-31951

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2024-04-07. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.5Exploit: None knownExposed: 0

A fix is available — apply it.

In the Opaque LSA Extended Link parser in FRRouting (FRR) through 9.1, there can be a buffer overflow and daemon crash in ospf_te_parse_ext_link for OSPF LSA packets during an attempt to read Segment Routing Adjacency SID subTLVs (lengths are not validated).

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

April 7, 2024

Last Modified

May 1, 2025

References (4)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntufrr-snmp (8.1-1ubuntu1.10) @ jammy2026-05-24ubuntu

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(1)

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

All Vendor Advisories

(2)

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 8× 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 127 total refreshes for this CVE.

  1. 2026-08-07 16:25 UTCEPSS rescore
  2. 2026-08-06 13:45 UTCEPSS rescore
  3. 2026-08-05 19:16 UTCEPSS rescore
  4. 2026-08-04 15:08 UTCEPSS rescore
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  9. 2026-08-01 07:36 UTCOSV refresh
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  11. 2026-07-30 16:26 UTCEPSS rescore
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  20. 2026-07-23 14:17 UTCEPSS rescore
  21. 2026-07-23 02:36 UTCEG score recompute
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  24. 2026-07-20 17:06 UTCEPSS rescore
  25. 2026-07-19 14:30 UTCEPSS rescore
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  1. 2026-07-19 14:30 UTCEPSS rescore
  2. 2026-07-19 02:28 UTCEPSS rescore
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  4. 2026-07-18 10:03 UTCEPSS rescore
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  6. 2026-07-16 17:01 UTCEPSS rescore
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  9. 2026-07-15 01:59 UTCEPSS rescore
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  11. 2026-07-14 14:55 UTCOSV refresh
  12. 2026-07-13 22:28 UTCEPSS rescore
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  17. 2026-07-09 19:09 UTCEPSS rescore
  18. 2026-07-08 15:13 UTCEPSS rescore
  19. 2026-07-07 13:45 UTCEPSS rescore
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  21. 2026-07-06 16:26 UTCEPSS rescore
  22. 2026-07-06 16:26 UTCEPSS rescore
  23. 2026-07-06 02:22 UTCEPSS rescore
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  25. 2026-07-05 02:29 UTCEPSS rescore
  26. 2026-07-04 06:30 UTCEPSS rescore
  27. 2026-07-02 17:00 UTCEPSS rescore
  28. 2026-07-01 15:05 UTCEPSS rescore
  29. 2026-06-30 23:21 UTCEPSS rescore
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  36. 2026-06-27 03:07 UTCEPSS rescore
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  38. 2026-06-26 15:39 UTCOSV refresh
  39. 2026-06-25 13:49 UTCEPSS rescore
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  41. 2026-06-24 14:04 UTCEPSS rescore
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  43. 2026-06-23 21:32 UTCEPSS rescore
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  45. 2026-06-22 14:25 UTCEPSS rescore
  46. 2026-06-22 14:24 UTCEPSS rescore
  47. 2026-06-21 14:55 UTCEPSS rescore
  48. 2026-06-21 14:55 UTCEPSS rescore
  49. 2026-06-21 01:58 UTCEPSS rescore
  50. 2026-06-21 01:58 UTCEPSS rescore
  51. 2026-06-19 19:25 UTCEPSS rescore
  52. 2026-06-19 19:24 UTCEPSS rescore
  53. 2026-06-18 17:51 UTCEPSS rescore
  54. 2026-06-18 17:51 UTCEPSS rescore
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  60. 2026-06-14 23:16 UTCEPSS rescore
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  63. 2026-06-12 23:11 UTCEPSS rescore
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  65. 2026-06-11 13:59 UTCEPSS rescore
  66. 2026-06-10 22:17 UTCEPSS rescore
  67. 2026-06-10 13:21 UTCEPSS rescore
  68. 2026-06-10 13:21 UTCEPSS rescore
  69. 2026-06-08 22:07 UTCOSV refresh
  70. 2026-06-08 14:16 UTCEPSS rescore
  71. 2026-06-07 15:24 UTCEPSS rescore
  72. 2026-06-07 15:24 UTCEPSS rescore
  73. 2026-06-06 13:46 UTCEPSS rescore
  74. 2026-06-06 13:46 UTCEPSS rescore
  75. 2026-06-05 22:46 UTCEPSS rescore

Frequently asked(5)

What is CVE-2024-31951?
CVE-2024-31951 is a medium vulnerability published on April 7, 2024. In the Opaque LSA Extended Link parser in FRRouting (FRR) through 9.1, there can be a buffer overflow and daemon crash in ospfteparseextlink for OSPF LSA packets during an attempt to read Segment Routing Adjacency SID subTLVs (lengths are not validated).
When was CVE-2024-31951 disclosed?
CVE-2024-31951 was first published in the National Vulnerability Database on April 7, 2024, with the most recent update on May 1, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-31951 actively exploited?
CVE-2024-31951 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.3% of all scored CVEs.
What is the CVSS score of CVE-2024-31951?
CVE-2024-31951 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2024-31951?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-31951, 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.

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