---
cve: "CVE-2026-78133"
severity: "HIGH"
cvss: 7.5
epss: "0.4%"
vendor: "strongSwan"
kev: false
exploited: false
published: "2026-09-11 01:52:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T12:17:46+02:00"
---

# CVE-2026-78133

> 7.5 HIGH · 🧪 PoC

## Beschreibung

libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- b43f6bfeed34b4afc8a7eb0c0de38e6e70177847 (Commit)

## Referenzen

- <https://github.com/strongswan/strongswan/releases/tag/6.1.0>
- <https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78133).html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-78133) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_