---
cve: "CVE-2026-51722"
severity: "CRITICAL"
cvss: 9.1
epss: "0.5%"
vendor: "n/a"
kev: false
exploited: false
published: "2026-08-31 17:17:41"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T13:46:21+02:00"
---

# CVE-2026-51722

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

Incorrect access control in the setWiFiRepeaterCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to repoint the device to an attacker-controlled upstream Wi-Fi via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

| 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 | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html>
- <https://www.totolink.net/>
- <https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md>
- <https://github.com/ShengWu00/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-51722) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_