CVE-2026-76887

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2% (6th percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

September 17, 2026

Advisory Details (2)

Auto-updated Aug 31, 2026
Patch available.
generic

Wireshark • Go Deep | Wireshark • wnpa-sec-2026-69 Dissection engine reassembly crash

https://www.wireshark.org/security/wnpa-sec-2026-69.html
generic

Wireshark reassembly memory-safety report (#21423) · Issues · Wireshark Foundation / Wireshark · GitLab

https://gitlab.com/wireshark/wireshark/-/work_items/21423

Vendor Advisories for CVE-2026-76887(1)

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

Affected Packages

(3 across 3 ecosystems)
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 18× in last 7d / 76× 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 117 total refreshes for this CVE.

  1. 2026-10-05 02:39 UTCEG score recompute
  2. 2026-10-05 02:39 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 04:04 UTCEG score recompute
  5. 2026-10-04 04:04 UTCGHSA enrichment
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-03 05:26 UTCEG score recompute
  8. 2026-10-03 05:26 UTCGHSA enrichment
  9. 2026-10-02 06:50 UTCEG score recompute
  10. 2026-10-02 06:50 UTCGHSA enrichment
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-10-01 07:03 UTCEG score recompute
  13. 2026-10-01 07:03 UTCGHSA enrichment
  14. 2026-09-30 08:28 UTCEG score recompute
  15. 2026-09-30 08:28 UTCGHSA enrichment
  16. 2026-09-29 15:24 UTCEPSS rescore
  17. 2026-09-29 02:02 UTCEG score recompute
  18. 2026-09-29 02:02 UTCGHSA enrichment
  19. 2026-09-28 13:52 UTCEPSS rescore
  20. 2026-09-28 02:51 UTCEG score recompute
  21. 2026-09-28 02:51 UTCGHSA enrichment
  22. 2026-09-27 13:48 UTCEPSS rescore
  23. 2026-09-27 04:15 UTCEG score recompute
  24. 2026-09-27 04:15 UTCGHSA enrichment
  25. 2026-09-26 15:59 UTCEPSS rescore
Show 75 more
  1. 2026-09-26 00:28 UTCEPSS rescore
  2. 2026-09-25 08:09 UTCEG score recompute
  3. 2026-09-25 08:09 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 09:32 UTCEG score recompute
  6. 2026-09-24 09:32 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 10:49 UTCEG score recompute
  9. 2026-09-23 10:49 UTCGHSA enrichment
  10. 2026-09-22 16:01 UTCEPSS rescore
  11. 2026-09-22 12:03 UTCEG score recompute
  12. 2026-09-22 12:03 UTCGHSA enrichment
  13. 2026-09-21 21:09 UTCEPSS rescore
  14. 2026-09-21 13:28 UTCEG score recompute
  15. 2026-09-21 13:28 UTCGHSA enrichment
  16. 2026-09-20 20:16 UTCEPSS rescore
  17. 2026-09-20 14:51 UTCGHSA enrichment
  18. 2026-09-19 16:16 UTCEG score recompute
  19. 2026-09-19 16:16 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 17:41 UTCEG score recompute
  22. 2026-09-18 17:41 UTCGHSA enrichment
  23. 2026-09-17 19:05 UTCGHSA enrichment
  24. 2026-09-16 20:03 UTCEG score recompute
  25. 2026-09-16 20:03 UTCGHSA enrichment
  26. 2026-09-16 14:08 UTCEPSS rescore
  27. 2026-09-16 05:15 UTCEPSS rescore
  28. 2026-09-15 18:49 UTCEG score recompute
  29. 2026-09-15 18:49 UTCGHSA enrichment
  30. 2026-09-15 03:12 UTCEPSS rescore
  31. 2026-09-14 19:18 UTCGHSA enrichment
  32. 2026-09-13 20:43 UTCEG score recompute
  33. 2026-09-13 20:43 UTCGHSA enrichment
  34. 2026-09-12 22:07 UTCEG score recompute
  35. 2026-09-12 22:07 UTCGHSA enrichment
  36. 2026-09-12 15:02 UTCEPSS rescore
  37. 2026-09-11 23:31 UTCEG score recompute
  38. 2026-09-11 23:31 UTCGHSA enrichment
  39. 2026-09-11 14:53 UTCEPSS rescore
  40. 2026-09-11 00:21 UTCEG score recompute
  41. 2026-09-11 00:20 UTCGHSA enrichment
  42. 2026-09-10 09:35 UTCEPSS rescore
  43. 2026-09-10 00:52 UTCGHSA enrichment
  44. 2026-09-09 02:08 UTCEG score recompute
  45. 2026-09-09 02:08 UTCGHSA enrichment
  46. 2026-09-08 22:01 UTCEPSS rescore
  47. 2026-09-07 10:07 UTCEG score recompute
  48. 2026-09-07 10:07 UTCGHSA enrichment
  49. 2026-09-06 13:48 UTCEPSS rescore
  50. 2026-09-06 11:25 UTCEG score recompute
  51. 2026-09-06 11:25 UTCGHSA enrichment
  52. 2026-09-05 12:49 UTCGHSA enrichment
  53. 2026-09-04 14:05 UTCEG score recompute
  54. 2026-09-04 14:04 UTCGHSA enrichment
  55. 2026-09-04 05:07 UTCEPSS rescore
  56. 2026-09-03 15:27 UTCGHSA enrichment
  57. 2026-09-02 16:47 UTCEG score recompute
  58. 2026-09-02 16:47 UTCGHSA enrichment
  59. 2026-09-02 14:12 UTCEPSS rescore
  60. 2026-09-01 18:12 UTCEG score recompute
  61. 2026-09-01 18:11 UTCGHSA enrichment
  62. 2026-09-01 13:54 UTCEPSS rescore
  63. 2026-09-01 04:40 UTCEPSS rescore
  64. 2026-09-01 04:40 UTCEPSS rescore
  65. 2026-08-31 19:33 UTCEG score recompute▲ 3.40
  66. 2026-08-31 19:33 UTCGHSA enrichment
  67. 2026-08-31 19:20 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  68. 2026-08-31 14:10 UTCEG score recompute
  69. 2026-08-31 14:10 UTCGHSA enrichment
  70. 2026-08-30 19:18 UTCEPSS rescore
  71. 2026-08-30 19:17 UTCEPSS rescore
  72. 2026-08-30 01:22 UTCEPSS rescore
  73. 2026-08-28 21:42 UTCEPSS rescore
  74. 2026-08-28 15:55 UTCEG score recompute
  75. 2026-08-28 15:54 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76887?
CVE-2026-76887 is a medium vulnerability published on August 19, 2026. Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
When was CVE-2026-76887 disclosed?
CVE-2026-76887 was first published on August 19, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76887 actively exploited?
CVE-2026-76887 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76887?
CVE-2026-76887 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-76887?
A fix for CVE-2026-76887 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-76887 are linked in the Vendor Advisories panel on this page.

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