CVE-2026-5402 PUBLISHED

Heap-based Buffer Overflow in Wireshark

Assigner: GitLab
Reserved: 02.04.2026 Published: 30.04.2026 Updated: 30.04.2026

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

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Product Status

Vendor Wireshark Foundation
Product Wireshark
Versions Default: unaffected
  • affected from 4.6.0 to 4.6.5 (excl.)

Solutions

Upgrade to version 4.6.5 or above

Credits

  • Duc Anh Nguyen finder

References

Problem Types

  • CWE-122: Heap-based Buffer Overflow CWE