# CVE-2026-7140

> Vulnerability · severity: **CRITICAL** (CVSS 9.8).

## Description

A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument HTTP leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

## Key facts

- **CVE ID:** CVE-2026-7140
- **Published:** 2026-04-27
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.8
- **CWE codes:** CWE-77, CWE-78

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7140

## Citation

> AI Analytics. CVE-2026-7140. Retrieved 2026-07-15 from https://api.ai-analytics.org/cve/CVE-2026-7140. Derived from NIST NVD. Licensed CC0.

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