CVE-2026-5402CWE-122

Heap-based Buffer Overflow in Wireshark

High · published April 30, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
50.7
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00654 · 50.7th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-04-30T05:39Z
EPSS history
Timeline
  • 30 APR 05:39Z
    Heap-based Buffer Overflow in Wireshark
    cvelistv5