CVE-2026-5408: Uncontrolled Recursion in Wireshark
Published Apr 30, 2026
·Updated
BT-DHT protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Affected Software
3 affected components
Wireshark Wireshark>=4.6.0<=4.6.4, >=4.4.0<=4.4.14
Wireshark Wireshark>=4.4.0<=4.4.14
Wireshark Wireshark>=4.6.0<=4.6.4
Remediation
Information
Upgrade to version 4.6.5 or above
Event History
Apr 30, 2026
CVE Published
via MITRE·05:40 AM
Data Sourced
via MITRE·05:40 AM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·07:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-5408?
CVE-2026-5408 is classified as a denial of service vulnerability due to uncontrolled recursion in the BT-DHT protocol dissector in specific versions of Wireshark.
2
How do I fix CVE-2026-5408?
To fix CVE-2026-5408, update Wireshark to version 4.6.5 or higher, or 4.4.15 or higher.
3
What are the affected versions in CVE-2026-5408?
The affected versions for CVE-2026-5408 are Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14.
4
What is the impact of CVE-2026-5408?
The impact of CVE-2026-5408 is that it can lead to a denial of service, causing the application to crash.
5
Is CVE-2026-5408 exploitable remotely?
Yes, CVE-2026-5408 can be exploited remotely if a user analyzes a malicious packet using vulnerable versions of Wireshark.