CVE-2026-76926

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2% (11th 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.

BUSMASTER file parser abnormal exit 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
11th
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 1, 2026

Advisory Details (2)

Auto-updated Sep 1, 2026
Patch available.
generic

Wireshark • Go Deep | Wireshark • wnpa-sec-2026-70 BUSMASTER file parser abnormal exit

https://www.wireshark.org/security/wnpa-sec-2026-70.html
generic

Malformed BUSMASTER header terminates the host process (#21435) · Issues · Wireshark Foundation / Wireshark · GitLab

https://gitlab.com/wireshark/wireshark/-/work_items/21435

Vendor Advisories for CVE-2026-76926(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 19× in last 7d / 80× 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 119 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76926?
CVE-2026-76926 is a medium vulnerability published on August 19, 2026. BUSMASTER file parser abnormal exit in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
When was CVE-2026-76926 disclosed?
CVE-2026-76926 was first published on August 19, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76926 actively exploited?
CVE-2026-76926 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76926?
CVE-2026-76926 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-76926?
A fix for CVE-2026-76926 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-76926 are linked in the Vendor Advisories panel on this page.

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