CVE-2026-15174

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated
5.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 5.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (GitLab Inc.) states them: "Upgrade to version 4.6.7 or above".

Catapult DCT2000 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

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 (value × EchelonGraph’s weight)
Severity55% × 45%
The EG Score, 5.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
<0.1%
EPSS %ILE
below the 1st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 8, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 8, 2026
Patch available.
Web page

Buffer overlow/segfault in Catapult DCT2000 dissector via not check no_ddi_entries in header (#21270) · Issues · Wireshark Foundation / Wireshark · GitLab

https://gitlab.com/wireshark/wireshark/-/work_items/21270

Vendor Advisories for CVE-2026-15174(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 rangeFix by version rangeDependents
wireshark3.4.10-0+deb11u1 ... 4.6.6-2 (69 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
wireshark4.0.10-1 ... 4.6.6-2 (50 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
wireshark4.4.13-0+deb13u1 ... 4.4.9-1 (7 versions)
  • every version up to 4.4.18-0+deb13u1: fixed in 4.4.18-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
wireshark4.4.7-1 ... 4.6.6-2 (16 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 32× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 160 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 60 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-12 16:32 UTCEG score recompute
  4. 2026-10-11 20:10 UTCEG score recompute
  5. 2026-10-11 17:22 UTCEG score recompute
  6. 2026-10-11 14:55 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-10-04 23:21 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-10-03 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-10-01 19:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-10-01 16:09 UTCEG score recompute
  17. 2026-10-01 16:09 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  18. 2026-09-30 15:02 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-09-28 13:20 UTCEG score recompute
  21. 2026-09-28 13:20 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  22. 2026-09-27 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-09-24 11:44 UTCEG score recompute
  25. 2026-09-24 11:44 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
Show 75 more
  1. 2026-09-23 06:04 UTCEG score recompute
  2. 2026-09-23 06:04 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  3. 2026-09-18 19:27 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-09-18 05:41 UTCEG score recompute
  5. 2026-09-18 05:41 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  6. 2026-09-16 14:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-09-16 05:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-09-14 07:23 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  9. 2026-09-13 08:23 UTCEG score recompute
  10. 2026-09-13 08:23 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  11. 2026-09-12 15:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  12. 2026-09-12 03:30 UTCEG score recompute
  13. 2026-09-12 03:30 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  14. 2026-09-11 14:52 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-09-11 09:36 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-09-10 09:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-09-08 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-09-07 16:01 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-09-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-09-05 22:46 UTCEG score recompute
  21. 2026-09-05 22:46 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  22. 2026-09-04 05:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-09-02 14:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-09-01 13:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  25. 2026-09-01 04:39 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  26. 2026-08-30 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  27. 2026-08-30 07:28 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  28. 2026-08-27 21:48 UTCEG score recompute
  29. 2026-08-27 21:48 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  30. 2026-08-27 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  31. 2026-08-26 14:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  32. 2026-08-26 04:45 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  33. 2026-08-24 20:59 UTCEG score recompute
  34. 2026-08-24 20:59 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  35. 2026-08-23 21:58 UTCEG score recompute
  36. 2026-08-23 21:58 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  37. 2026-08-23 00:19 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  38. 2026-08-22 22:58 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  39. 2026-08-21 23:57 UTCEG score recompute
  40. 2026-08-21 23:57 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  41. 2026-08-21 23:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  42. 2026-08-21 00:56 UTCEG score recompute
  43. 2026-08-21 00:56 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  44. 2026-08-20 22:55 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  45. 2026-08-20 01:56 UTCEG score recompute
  46. 2026-08-20 01:56 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  47. 2026-08-19 17:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  48. 2026-08-18 22:27 UTCEG score recompute
  49. 2026-08-18 22:27 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  50. 2026-08-18 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  51. 2026-08-17 22:21 UTCEG score recompute
  52. 2026-08-17 22:21 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  53. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  54. 2026-08-16 19:38 UTCEG score recompute
  55. 2026-08-16 19:38 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  56. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  57. 2026-08-15 19:47 UTCEG score recompute
  58. 2026-08-15 19:47 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  59. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  60. 2026-08-14 20:46 UTCEG score recompute
  61. 2026-08-14 20:46 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  62. 2026-08-13 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  63. 2026-08-13 21:45 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  64. 2026-08-12 22:44 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  65. 2026-08-11 23:44 UTCEG score recompute
  66. 2026-08-11 23:44 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  67. 2026-08-11 13:42 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  68. 2026-08-11 00:44 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  69. 2026-08-10 01:43 UTCEG score recompute
  70. 2026-08-10 01:43 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  71. 2026-08-09 13:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  72. 2026-08-09 02:42 UTCEG score recompute
  73. 2026-08-09 02:42 UTCGHSA enrichmentGHSA-x9cw-h8q8-q64c · GitHub CVSS 5.5
  74. 2026-08-08 16:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  75. 2026-08-08 03:41 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15174?
CVE-2026-15174 is a medium-severity vulnerability; its CVE record was published on July 8, 2026. Catapult DCT2000 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
When was the CVE record for CVE-2026-15174 published?
The CVE record for CVE-2026-15174 was published on July 8, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 9, 2026; the record at its source may have been updated since.
Is CVE-2026-15174 actively exploited?
CVE-2026-15174 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15174?
CVE-2026-15174 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15174?
A fix for CVE-2026-15174 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (GitLab Inc.) states them: "Upgrade to version 4.6.7 or above". The vendor advisories EchelonGraph has for CVE-2026-15174 are linked in the Vendor Advisories panel on this page.

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