---
cve: "CVE-2026-79911"
severity: "CRITICAL"
cvss: 10.0
epss: "0.6%"
vendor: "Totolink"
kev: false
exploited: false
published: "2026-08-25 22:15:13"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T01:26:33+02:00"
---

# CVE-2026-79911

> 10.0 CRITICAL · 🧪 PoC

## Beschreibung

A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://vuldb.com/vuln/395061>
- <https://vuldb.com/vuln/395061/cti>
- <https://vuldb.com/cve/CVE-2026-79911>
- <https://vuldb.com/submit/881258>
- <https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md>
- <https://www.totolink.net/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-79911) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_