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CVE-2026-5655

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

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · April 30, 2026

Updated · July 3, 2026

Description

A flaw was found in Wireshark. A local user could be tricked into opening a specially crafted capture file containing Session Description Protocol (SDP) data. Processing this malicious data could lead to a crash in the SDP protocol dissector, resulting in a denial of service for the application.

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

To mitigate this issue, users should avoid opening untrusted or suspicious capture files with Wireshark. Exercise caution when handling files from unknown sources to prevent accidental application crashes.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-237 · Improper Handling of Structural Elements