CVE-2026-15171 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-15171MEDIUM

Wireshark Foundation Wireshark — NULL Pointer Dereference in Wireshark

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  N  N  H    5.5   .0012    2.3     —

AFFECTED
  Product    Versions  Fixed
  Wireshark  4.6.0 –   —

TIMELINE
  Jul 8   EXPLOIT PUBLISHED — CVE-2026-15171 (Wireshark Foundation Wireshark). Public exploit reference added.
  Jul 8   Reserved by GitLab
  Jul 8   Published (CNA: GitLab)

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

Description

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

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-15171 (Wireshark Foundation Wireshark). Public exploit reference added.
July 8, 2026	Reserved	Reserved by GitLab
July 8, 2026	Published	Published (CNA: GitLab)

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/21378 [Exploit, Issue Tracking, Third Party Advisory]
https://www.wireshark.org/security/wnpa-sec-2026-55.html [Vendor Advisory]

Authoritative record: CVE-2026-15171 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-2026-15171 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 Wednesday, August 19, 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.