CVE-2026-6989 — Tenda F453 Command Injection
CVE-2026-6989 — A vulnerability has been found in Tenda F453 up to 1.0.0.3. Impacted is the function TendaTelnet of the file /goform/telnet of the component Telnet Service. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to t
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-2026-6989 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-2026-6989 Tenda F453 Command Injection via Telnet Service
title: CVE-2026-6989 Tenda F453 Command Injection via Telnet Service
id: scw-2026-04-25-ai-1
status: experimental
level: critical
description: |
This rule detects attempts to exploit CVE-2026-6989 by targeting the TendaTelnet function in the /goform/telnet endpoint of Tenda F453 devices. The presence of 'cmd=' in the query string indicates a potential command injection attempt, allowing remote attackers to execute arbitrary commands.
author: SCW Feed Engine (AI-generated)
date: 2026-04-25
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-6989/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/goform/telnet'
cs-uri-query|contains:
- 'cmd='
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-6989 | vulnerability | CVE-2026-6989 |
| 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 | April 25, 2026 at 21:16 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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