CVE-2026-5403

Heap-based Buffer Overflow in Wireshark

CVSS 7.8 HIGHEPSS 0.1%CWE-122

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.8EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

30 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

SBC codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution

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

Affected products

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References