Denial of Service Vulnerability in Wireshark by the BT-DHT Protocol Dissector
CVE-2026-5408

5.5MEDIUM

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
30 April 2026

What is CVE-2026-5408?

The Wireshark application, used for network traffic analysis, is susceptible to a denial of service due to a flaw in the BT-DHT protocol dissector. This vulnerability affects versions 4.6.0 to 4.6.4 as well as 4.4.0 to 4.4.14. When exploited, this flaw could lead to application crashes, disrupting user activities and potentially affecting network diagnostics. Users are encouraged to update to the latest version to mitigate risks associated with this vulnerability.

Affected Version(s)

Wireshark 4.6.0 < 4.6.5

Wireshark 4.4.0 < 4.4.15

References

https://www.wireshark.org/security/wnpa-sec-2026-09.html
https://gitlab.com/wireshark/wireshark/-/issues/21067
issue-trackingpermissions-required

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Brendan Coles
.