CVE-2026-5402

HIGH 8.8CVE-2026-5402 · Published 30/04/2026 · updated 26/10/2026

In short

CVE-2026-5402 is a HIGH (CVSS 8.8) vulnerability affecting wireshark (wireshark).
Chance of exploitation in the next 30 days (EPSS): 0.39%, higher than 33.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
wireshark wireshark	`≥ 4.6.0, ≤ 4.6.4`	No fix yet

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

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

≥ 4.6.0, ≤ 4.6.4

No fix yet

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