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Wireshark LBMC reassembly bug allows remote code execution

Original title: ZDI-26-899: Wireshark LBMC Fragment Reassembly Integer Overflow Remote Code Execution Vulnerability

ZDI Published Advisories ()1
Part of a story covered by 3 sourcesZDI publishes three Wireshark remote code execution advisoriesMerged summary & timeline
AI summary · x-ai/grok-4.7Summaries by Vani AI

Only Wireshark installs with LBMC fragment reassembly enabled are affected; ZDI rates it CVSS 7.5.

ZDI-26-899 describes an integer overflow in Wireshark LBMC fragment reassembly that lets remote attackers execute arbitrary code. Authentication is not required, but the flaw applies only when LBMC fragment reassembly is enabled. ZDI assigned a CVSS rating of 7.5. Affected and fixed versions are not stated in the snippet.

Unconfirmed: The snippet does not state affected versions, a fix, or whether the flaw is exploited.

Key facts
  • Exploitation does not require authentication.
  • Instances without LBMC fragment reassembly enabled are not vulnerable.
  • ZDI assigned CVSS 7.5.
Security assessment · AI, from the article

Impact: Unauthenticated remote arbitrary code execution

ProductAffected
Wireshark—
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From the original article

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Wireshark. Authentication is not required to exploit this vulnerability. However, only instances with LBMC fragment reassembly enabled are vulnerable.

ZDI Published Advisories

zerodayinitiative.com

Read the full article at ZDI Published Advisories

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.