The host is installed with Wireshark 4.0.x before 4.0.14, or 4.2.x before 4.2.4 and is prone to a denial of service vulnerability. A flaw is present in the application, which fails to properly handle the T.38 dissector. Successful exploitation allows atackers to crash Wireshark by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.