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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0258
Denial of Service Vulnerability in Wireshark

Original Issue Date:May 21, 2026

Severity Rating: MEDIUM

Software Affected

  • Wireshark versions 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15

Overview

A vulnerability has been reported in Wireshark, which could allow an attacker to cause Denial of Service (DoS) condition on the targeted system.

Target Audience:
All end-user organizations and individuals using Wireshark.

Risk Assessment:
High risk of service disruption.

Impact Assessment:
Potential for service unavailability.

Description

Wireshark is a network protocol analyzer used to capture and inspect data packets in real time for troubleshooting, analysis, and security purposes.

A Denial of Service (DoS) vulnerability exists in Wireshark due to NULL Pointer Dereference (NPD).

Successful exploitation of this vulnerability leads to Wireshark dissector crash, resulting in a denial-of-service condition on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor:
https://www.wireshark.org/security/wnpa-sec-2026-51.html

Vendor Information

Wireshark
https://www.wireshark.org/security/wnpa-sec-2026-51.html

References

Wireshark
https://www.wireshark.org/security/wnpa-sec-2026-51.html

CVE Name
CVE-2026-6526

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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