wnpa-sec-2026-77 · H.245 protocol dissector crash
Summary
Name: H.245 protocol dissector crash
Docid: wnpa-sec-2026-77
Date: August 12, 2026
Affected versions: 4.6.0 to 4.6.7, 4.4.0 to 4.4.17
Fixed versions: 4.6.8, 4.4.18
References:
Wireshark issue 21447.
Details
Description
The H.245 protocol dissector could crash.
Impact
Discovered by Aisle Research (Dmitrijs Trizna, Luigino Camastra, Ze Sheng (O2Lab & TAMU), Igor Morgenstern). We are unaware of any exploits for this issue. It may be possible to make Wireshark crash by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet capture file.
Resolution
Upgrade to Wireshark 4.6.8, 4.4.18 or later.
