Denial of Service Vulnerability in Wireshark SPDY Protocol Dissector
CVE-2026-95387

8.1HIGH

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
29 September 2026

What is CVE-2026-95387?

A vulnerability in versions 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 of Wireshark's SPDY protocol dissector can lead to a denial of service condition. An attacker can exploit this vulnerability to cause the application to crash during packet analysis, disrupting network monitoring and analysis efforts. Users are encouraged to update to fixed versions available from Wireshark's official site to mitigate this risk.

Affected Version(s)

Wireshark 4.6.0 < 4.6.9

Wireshark 4.4.0 < 4.4.19

References

https://www.wireshark.org/security/wnpa-sec-2026-97.html
https://gitlab.com/wireshark/wireshark/-/work_items/21487

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Security research assessment of Wireshark internals (Feng Xue)
.