---
cve: "CVE-2026-5402"
severity: "HIGH"
cvss: 8.8
epss: "39%"
vendor: "Wireshark Foundation"
kev: false
exploited: false
published: "2026-04-30 07:16:37"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T22:05:36+02:00"
---

# CVE-2026-5402

> 8.8 HIGH

## Beschreibung

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

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- b40c46f8386770910317bea2e9187b835502d1b4 (Commit)

## Referenzen

- <https://www.wireshark.org/security/wnpa-sec-2026-14.html>
- <https://gitlab.com/wireshark/wireshark/-/issues/21090>
- <https://access.redhat.com/security/cve/CVE-2026-5402>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2464038>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5402.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-5402) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_