wnpa-sec-2026-20 · iLBC audio codec crash
Summary
Name: iLBC audio codec crash
Docid: wnpa-sec-2026-20
Date: April 29, 2026
Affected versions: 4.6.0 to 4.6.4, 4.4.0 to 4.4.14
Fixed versions: 4.6.5, 4.4.15
References:
Wireshark issue 21113.
CVE-2026-5657.
Details
Description
The iLBC audio codec could crash.
Impact
Discovered by Alexandre de Oliveira. 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 trace file.
Resolution
Upgrade to Wireshark 4.6.5, 4.4.15 or later.
