CVE-2026-15165

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-08. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: Elevated riskExposed: 0

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

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity55% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

[Security] TLS ECH transcript reconstruction: heap buffer overflow via repeated ech_outer_extensions (#21390) · Issues · Wireshark Foundation / Wireshark · GitLab

https://gitlab.com/wireshark/wireshark/-/work_items/21390

Vendor Advisories for CVE-2026-15165(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
wireshark3.4.10-0+deb11u1 ... 4.6.6-2 (69 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
wireshark4.0.10-1 ... 4.6.6-2 (50 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
wireshark4.4.13-0+deb13u1 ... 4.6.6-2 (20 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
wireshark4.4.7-1 ... 4.6.6-2 (16 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 77× 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 124 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15165?
CVE-2026-15165 is a medium vulnerability published on July 8, 2026. TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service
When was CVE-2026-15165 disclosed?
CVE-2026-15165 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15165 actively exploited?
CVE-2026-15165 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 94.9% of all scored CVEs.
What is the CVSS score of CVE-2026-15165?
CVE-2026-15165 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-15165?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15165, 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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