wnpa-sec-2026-54 · FMP/NOTIFY protocol dissector large loop
Summary
Name: FMP/NOTIFY protocol dissector large loop
Docid: wnpa-sec-2026-54
Date: July 8, 2026
Affected versions: 4.6.0 to 4.6.6, 4.4.0 to 4.4.16
Fixed versions: 4.6.7, 4.4.17
References:
Wireshark issue 21347.
CVE-2026-15172.
Details
Description
The FMP/NOTIFY dissector could go into a large loop.
Impact
Discovered by Gabriel Rodrigues. 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 4.6.7, 4.4.17 or later.
