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CVE-2026-6526

wireshark: Wireshark: Denial of Service due to RTSP protocol dissector crash

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Severity

Moderate

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · April 30, 2026

Updated · July 3, 2026

Description

A flaw was found in Wireshark, a network protocol analyzer. By processing a specially crafted Real-Time Streaming Protocol (RTSP) packet, a remote attacker could cause the Wireshark application to crash, leading to a denial of service. This vulnerability affects the RTSP protocol dissector.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Users can reduce exposure by avoiding the analysis of untrusted network capture files or live network traffic from untrusted sources. To specifically prevent the vulnerable RTSP dissector from processing packets, it can be disabled within Wireshark's preferences. Navigate to 'Analyze' -> 'Enabled Protocols...' and uncheck the 'RTSP' protocol. Disabling this protocol may impact the ability to analyze legitimate RTSP traffic.

CVSS / CWE

CVSS 3.1 · 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-617 · Reachable Assertion