wnpa-sec-2026-34 · ASN.1 PER dissector crash
Summary
Name: ASN.1 PER dissector crash
Docid: wnpa-sec-2026-34
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 21149.
CVE-2026-6527.
Details
Description
Protocol dissectors that use ASN.1 PER encoding 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.
