Input validation error in Wireshark - CVE-2026-15166

Vulnerability identifier: #VU137178

CSH Severity: Medium

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-15166

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in the IEEE 802.11 protocol dissector when parsing a malformed packet trace file. A remote attacker can trick the victim into opening a crafted packet trace file to cause a denial of service.

User interaction is required to open the crafted packet trace file.

Wireshark
openEuler
Anolis OS
Fedora
wireshark-debuginfo
wireshark-doc
wireshark-devel
wireshark-cli
wireshark
wireshark-help
wireshark-debugsource

Install security update from vendor's website.

Wireshark - addressed in versions 4.4.17, 4.6.7
wireshark-debuginfo - update to 4.4.17-1
wireshark-doc - update to 4.4.17-1
wireshark-devel - update to 4.4.17-1
wireshark-cli - update to 4.4.17-1
wireshark - update to 4.4.17-1
wireshark-help - update to 4.4.17-1
wireshark-devel - update to 4.4.17-1
wireshark-debugsource - update to 4.4.17-1
wireshark - update to 4.4.17-1
wireshark - update to 4.6.7-1.fc44

• https://www.wireshark.org/security/wnpa-sec-2026-57.html
• https://gitlab.com/wireshark/wireshark/-/issues/21391

• Multiple vulnerabilities in Wireshark
• Fedora 44 update for wireshark
• openEuler 24.03 LTS SP4 update for wireshark
• openEuler 24.03 LTS SP3 update for wireshark
• openEuler 24.03 LTS SP1 update for wireshark
• openEuler 22.03 LTS SP4 update for wireshark
• Anolis OS update for wireshark