wnpa-sec-2026-96 · IEEE C37.118 Synchrophasor protocol dissector memory leak
Summary
Name: IEEE C37.118 Synchrophasor protocol dissector memory leak
Docid: wnpa-sec-2026-96
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 21492.
CVE-2026-95395.
Details
Description
The IEEE C37.118 Synchrophasor protocol dissector could leak memory.
Impact
Discovered by Liu Tianzhuo (刘天卓). 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.
