CVE-2026-7030: Tenda F456 Router Buffer Overflow Exposes Networks
The National Vulnerability Database has detailed CVE-2026-7030, a high-severity buffer overflow vulnerability impacting Tenda F456 router firmware version 1.0.0.5. This flaw resides within the fromRouteStatic function of the /goform/RouteStatic file, where improper handling of the page argument can be exploited.
Attackers can trigger this buffer overflow remotely, leading to arbitrary code execution or denial of service. With a CVSS score of 8.8 (HIGH), the National Vulnerability Database notes the exploit has been publicly disclosed, significantly increasing the risk of active exploitation. This is not a theoretical flaw; it’s a weaponized vulnerability now.
For defenders, this means Tenda F456 routers running the affected firmware are critical weak points. Given the public exploit, organizations and individuals still using these devices are directly exposed to remote compromise. The attacker’s calculus is simple: find exposed Tenda F456 devices, run the exploit, and gain control.
What This Means For You
- If your organization or home network relies on a Tenda F456 router running firmware version 1.0.0.5, you are exposed to remote compromise. Immediately identify and replace these devices, or if no patch is available, isolate them from the internet. Do not underestimate the impact of a publicly disclosed remote code execution vulnerability on an internet-facing device.
Related ATT&CK Techniques
🛡️ Detection Rules
1 rule · 6 SIEM formats1 detection rule auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-7030: Tenda F456 RouteStatic Buffer Overflow Attempt
title: CVE-2026-7030: Tenda F456 RouteStatic Buffer Overflow Attempt
id: scw-2026-04-26-ai-1
status: experimental
level: critical
description: |
Detects attempts to exploit CVE-2026-7030 by targeting the /goform/RouteStatic endpoint with a POST request. The vulnerability lies in the handling of the 'page' parameter, which can lead to a buffer overflow. This rule specifically looks for the vulnerable URI and the presence of the 'page' parameter, indicating a potential exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-04-26
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-7030/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri:
- '/goform/RouteStatic'
cs-method:
- 'POST'
cs-uri-query|contains:
- 'page='
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-7030 | Buffer Overflow | Tenda F456 version 1.0.0.5 |
| CVE-2026-7030 | Buffer Overflow | Vulnerable function: fromRouteStatic in /goform/RouteStatic |
| CVE-2026-7030 | Buffer Overflow | Vulnerable argument: page |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 26, 2026 at 13:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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