High7.8Red Hat & Ubuntu Linux

Heap-based Buffer Overflow in Wireshark

CVE-2026-5405 Published Apr 30, 2026

CVE-2026-5405

Affected products & platforms

Red Hat & Ubuntu LinuxUnclassified

Summary

Heap-based Buffer Overflow in Wireshark. Red Hat rates this important (CVSS 7.8). Weakness: CWE-122. Affected package(s): wireshark. Resolved in Red Hat advisory RHSA-2026:20600 — update the affected packages (`sudo dnf update`).

Affected versions

wireshark-1:4.4.2-10.el10_2
wireshark-1:4.4.2-3.el10_0.4

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Fixed versions

RHSA-2026:20600

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:20600 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Discussion(0)

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