---
cve: "CVE-2026-9457"
severity: "CRITICAL"
cvss: 9.3
epss: "3.3%"
vendor: "Totolink"
kev: false
exploited: false
published: "2026-05-25 14:16:28"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-09T12:06:36+02:00"
---

# CVE-2026-9457

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

## 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/365438>
- <https://vuldb.com/vuln/365438/cti>
- <https://vuldb.com/submit/813454>
- <https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_343/README.md>
- <https://www.totolink.net/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-9457/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_