#VU121530 Input validation error in Wireshark - CVE-2026-0959
Published: January 14, 2026 / Updated: January 23, 2026
Vulnerability identifier: #VU121530
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-0959
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Wireshark
Wireshark
Software vendor:
Wireshark.org
Wireshark.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in IEEE 802.11 dissector. A remote attacker can send specially crafted input via the network monitored with Wireshark and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.