Input validation error in Wireshark - CVE-2026-6528
Published: April 30, 2026
Vulnerability identifier: #VU128659
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-6528
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the TLS protocol dissector when parsing crafted TLS traffic. A remote attacker can supply malformed input to trigger an infinite loop to cause a denial of service.
Affected software
Wireshark
How to mitigate CVE-2026-6528
Install security update from vendor's website.
Wireshark - update to 4.6.5