CVE-2026-7718 — Totolink WA300 5.2cu.7112_B20190227 Command Injection
CVE-2026-7718 — A vulnerability was identified in Totolink WA300 5.2cu.7112_B20190227. Impacted is the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument webWlanIdx leads to command injection. The attack may be initiated re
What This Means For You
- If your environment is affected by CWE-74, CWE-77, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-7718 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-7718 - Totolink WA300 Command Injection via setWebWlanIdx
title: CVE-2026-7718 - Totolink WA300 Command Injection via setWebWlanIdx
id: scw-2026-05-04-ai-1
status: experimental
level: critical
description: |
Detects attempts to exploit CVE-2026-7718 by targeting the setWebWlanIdx function in Totolink WA300 devices. This rule looks for POST requests to /cgi-bin/cstecgi.cgi containing the vulnerable 'setWebWlanIdx' parameter, which is indicative of a command injection attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-05-04
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-7718/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/cgi-bin/cstecgi.cgi'
cs-method|exact:
- 'POST'
cs-uri-query|contains:
- 'setWebWlanIdx='
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-7718 | vulnerability | CVE-2026-7718 |
| CWE-74 | weakness | CWE-74 |
| CWE-77 | weakness | CWE-77 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 04, 2026 at 05:15 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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