CVE-2026-5402

HIGH

Heap-based Buffer Overflow in Wireshark

Title source: cna
STIX 2.1

Description

TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution

References (5)

Core 5

Scores

CVSS v3 8.8
EPSS 0.0039
EPSS Percentile 31.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-122
Status published
Products (2)
wireshark/wireshark 4.6.0 - 4.6.4
Wireshark Foundation/Wireshark 4.6.0 - 4.6.5
Published Apr 30, 2026
Tracked Since Apr 30, 2026