Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-76928

CVE-2026-76928HIGH

Wireshark Foundation Wireshark — NULL Pointer Dereference in Wireshark

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0032   22.5     —

AFFECTED
  Product    Versions  Fixed
  Wireshark  4.6.0 –   —

TIMELINE
  Aug 19  Reserved by GitLab
  Aug 19  Published (CNA: GitLab)
  Aug 31  EXPLOIT PUBLISHED — CVE-2026-76928 (Wireshark Foundation Wireshark). Public exploit reference added.

CWE-476 · CNA: GitLab · CVSS v3.1 · 2 references · NVD status: Analyzed

Description

X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 19, 2026	Reserved	Reserved by GitLab
August 19, 2026	Published	Published (CNA: GitLab)
August 31, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-76928 (Wireshark Foundation Wireshark). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Wireshark Foundation	Wireshark	—	4.6.0	—

Weaknesses

CWE-476

References (2)

https://gitlab.com/wireshark/wireshark/-/work_items/21469 [Exploit, Mitigation, Vendor Advisory]
https://www.wireshark.org/security/wnpa-sec-2026-87.html [Vendor Advisory]

Authoritative record: CVE-2026-76928 at cve.org

Vendors: wireshark foundation

Weaknesses: CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-76928 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.