CVE-2026-5402HIGH 8.8EPSS p25.7%

CVE-2026-5402CVE-2026-5402

Description

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

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS0.34% probability of exploitation · percentile 25.7% · 2026-06-19T12:03:05Z
Published2026-04-30
Last modified2026-05-01

Underlying weaknesses· 1

CWE-122

References

  1. https://gitlab.com/wireshark/wireshark/-/issues/21090
  2. https://www.wireshark.org/security/wnpa-sec-2026-14.html

1

TypeTargetConfidenceTier
WeaknessHeap-based Buffer Overflowcwe-1220%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.