wnpa-sec-2026-107 · TIFF protocol dissector infinite loop
Summary
Name: TIFF protocol dissector infinite loop
Docid: wnpa-sec-2026-107
Date: September 23, 2026
Affected versions: 4.6.0 to 4.6.8, 4.4.0 to 4.4.18
Fixed versions: 4.6.9, 4.4.19
References:
Wireshark issue 21565.
CVE-2026-96418.
Details
Description
The TIFF protocol dissector could go into an infinite loop.
Impact
Discovered by Claude and Ada Logics. 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 4.6.9, 4.4.19 or later.
