---
cve: "CVE-2026-45764"
severity: "CRITICAL"
cvss: 9.1
epss: "0.4%"
vendor: "OISF"
kev: false
exploited: false
published: "2026-09-10 21:14:30"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T14:47:58+02:00"
---

# CVE-2026-45764

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 534864353e8d6e5d50991546f96e33f547879aec (Commit)
- 5611b60c6172fe4204cd69a9c9d466b6632dd0c7 (Commit)

## Referenzen

- <https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr>
- <https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315>
- <https://redmine.openinfosecfoundation.org/issues/8492>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-45764) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_