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Multiple Vulnerabilities in Wireshark

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: MEDIUM

Software Affected

Wireshark versions affected from 4.6.0 before 4.6.4 

Wireshark versions affected from 4.4.0 before 4.4.14

Overview

Multiple vulnerabilities have been reported in Wireshark, which could allow an attacker to cause denial of service conditions on the targeted system.

Target Audience:

All end-user organizations and individuals using Wireshark.

Risk Assessment:

Potential for service unavailability.

Impact Assessment:

High risk of service disruptions.

Description

Wireshark is an open source network analyzer, which allows users to capture and inspect packets of data that are transmitted over a network.

These vulnerabilities exists in Wireshark due to an improperly Controlled Sequential Memory Allocation, null Pointer Dereference and Buffer Over-read. An Attacker could exploit these vulnerabilities by injecting a malformed packet or crafted capture file.

Successful exploitation may lead to Wireshark, causing denial of service conditions on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor:

https://www.wireshark.org/security/wnpa-sec-2026-05.html

https://www.wireshark.org/security/wnpa-sec-2026-06.html

https://www.wireshark.org/security/wnpa-sec-2026-07.html

Vendor Information

Wireshark

https://www.wireshark.org/security/wnpa-sec-2026-05.html

https://www.wireshark.org/security/wnpa-sec-2026-06.html

https://www.wireshark.org/security/wnpa-sec-2026-07.html

References

Wireshark

https://www.wireshark.org/security/wnpa-sec-2026-05.html

https://www.wireshark.org/security/wnpa-sec-2026-06.html

https://www.wireshark.org/security/wnpa-sec-2026-07.html

CVE Name

CVE-2026-3201

CVE-2026-3202

CVE-2026-3203

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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