CVE-2026-54345

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 58% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header underflows the unsigned 32-bit value and drives an unbounded allocation of roughly 4 GiB, and two such messages in succession OOM-kill a collector, causing an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

July 28, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jul 28, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

v1.6.1

Patch available: gopacket/gopacket v1.6.1

https://github.com/gopacket/gopacket/releases/tag/v1.6.1
github_commit Patch Available

commit 145859d0eaee (gopacket/gopacket)

Patch available: gopacket/gopacket v1.6.1 (contains commit 145859d0eaee)

https://github.com/gopacket/gopacket/commit/145859d0eaee1a6f5925ffb93851c976449c3311
github Patch Available🟡 PoC Available

Diameter AVP decoder: uint32 underflow on vendor header size leads to unbounded ~4 GiB allocation (unauthenticated remote DoS) · Advisory · gopacket/gopacket · GitHub

https://github.com/gopacket/gopacket/security/advisories/GHSA-6r28-9ppf-4hj5

Vendor Advisories for CVE-2026-54345(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/gopacket/gopacket—1.6.1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 47× 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. 2026-09-15 08:38 UTCEG score recompute
  2. 2026-09-13 16:51 UTCEG score recompute
  3. 2026-09-13 16:47 UTCEPSS rescore
  4. 2026-09-12 18:15 UTCEG score recompute
  5. 2026-09-11 19:23 UTCEG score recompute
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-10 20:13 UTCEG score recompute
  8. 2026-09-10 09:35 UTCEPSS rescore
  9. 2026-09-09 08:02 UTCEG score recompute
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-07 20:55 UTCEG score recompute
  12. 2026-09-07 16:01 UTCEPSS rescore
  13. 2026-09-06 18:23 UTCEG score recompute
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-05 19:10 UTCEG score recompute
  16. 2026-09-05 05:32 UTCEG score recompute
  17. 2026-09-04 12:01 UTCEG score recompute
  18. 2026-09-04 05:06 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 22:53 UTCEG score recompute
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-08-30 22:12 UTCEG score recompute
  24. 2026-08-30 19:17 UTCEPSS rescore
  25. 2026-08-30 10:54 UTCEG score recompute
Show 62 more
  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 23:32 UTCEG score recompute
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-28 01:24 UTCEG score recompute
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-26 15:16 UTCEG score recompute
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 16:40 UTCEG score recompute
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-24 17:56 UTCEG score recompute
  11. 2026-08-23 06:10 UTCEG score recompute
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 07:34 UTCEG score recompute
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 08:58 UTCEG score recompute
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-19 23:02 UTCEG score recompute
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-19 00:24 UTCEG score recompute
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-18 01:08 UTCEG score recompute
  22. 2026-08-17 13:47 UTCEPSS rescore
  23. 2026-08-16 15:03 UTCEG score recompute
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 03:45 UTCEG score recompute
  26. 2026-08-16 02:14 UTCEPSS rescore
  27. 2026-08-15 05:09 UTCEG score recompute
  28. 2026-08-15 01:30 UTCEPSS rescore
  29. 2026-08-14 06:32 UTCEG score recompute
  30. 2026-08-13 22:00 UTCEPSS rescore
  31. 2026-08-12 20:39 UTCEG score recompute
  32. 2026-08-12 13:51 UTCEPSS rescore
  33. 2026-08-11 22:03 UTCEG score recompute
  34. 2026-08-11 10:46 UTCEG score recompute
  35. 2026-08-11 00:00 UTCEPSS rescore
  36. 2026-08-10 00:51 UTCEG score recompute
  37. 2026-08-09 13:46 UTCEPSS rescore
  38. 2026-08-09 02:16 UTCEG score recompute
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-08 03:40 UTCEG score recompute
  41. 2026-08-06 17:46 UTCEG score recompute
  42. 2026-08-06 13:47 UTCEPSS rescore
  43. 2026-08-06 06:28 UTCEG score recompute
  44. 2026-08-05 19:17 UTCEPSS rescore
  45. 2026-08-05 19:10 UTCEG score recompute▲ 0.60
  46. 2026-08-05 19:10 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  47. 2026-08-05 05:14 UTCEG score recompute
  48. 2026-08-04 15:10 UTCEPSS rescore
  49. 2026-08-04 10:39 UTCEPSS rescore
  50. 2026-08-04 03:18 UTCEG score recompute
  51. 2026-08-03 10:36 UTCEPSS rescore
  52. 2026-08-03 01:25 UTCEG score recompute
  53. 2026-08-02 02:27 UTCEPSS rescore
  54. 2026-08-01 23:31 UTCEG score recompute
  55. 2026-08-01 04:16 UTCEPSS rescore
  56. 2026-07-30 19:44 UTCEG score recompute
  57. 2026-07-30 16:28 UTCEPSS rescore
  58. 2026-07-30 01:30 UTCEPSS rescore
  59. 2026-07-28 17:23 UTCEG score recompute
  60. 2026-07-28 16:54 UTCEG score recompute▲ 6.90
  61. 2026-07-28 16:53 UTCMITRE cvelistV5CVSS v3 → 6.9 · CVSS v4 → 6.9
  62. 2026-07-28 16:24 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54345?
CVE-2026-54345 is a high vulnerability published on July 28, 2026. gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header…
When was CVE-2026-54345 disclosed?
CVE-2026-54345 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54345 actively exploited?
CVE-2026-54345 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 57.9% of all scored CVEs.
What is the CVSS score of CVE-2026-54345?
CVE-2026-54345 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-54345?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54345, 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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