wnpa-sec-2025-08 · MEGACO dissector infinite loop
Summary
Name: MEGACO dissector infinite loop
Docid: wnpa-sec-2025-08
Date: December 3, 2025
Affected versions: 4.6.0 to 4.6.1, 4.4.0 to 4.4.11
Fixed versions: 4.6.2, 4.4.12
References:
Wireshark issue 20884.
CVE-2025-13946.
Details
Description
The MEGACO dissector could go into an infinite loop.
Impact
Discovered in our internal testing environment. We are unaware of any exploits for this issue. It may be possible to make Wireshark consume excessive CPU resources by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.
Resolution
Upgrade to Wireshark 4.6.2, 4.4.12 or later.
