---
cve: "CVE-2026-7139"
severity: "CRITICAL"
cvss: 9.3
epss: "3.3%"
vendor: "Totolink"
kev: false
exploited: false
published: "2026-04-27 17:16:45"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-08T19:50:36+02:00"
---

# CVE-2026-7139

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument mode causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used.

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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/359738>
- <https://vuldb.com/vuln/359738/cti>
- <https://vuldb.com/submit/801106>
- <https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_314/README.md>
- <https://www.totolink.net/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-7139/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_