CVE-2026-7078: Tenda F456 Router Buffer Overflow Exposes Networks
The National Vulnerability Database has disclosed CVE-2026-7078, a high-severity buffer overflow vulnerability in the Tenda F456 router, specifically version 1.0.0.5. This flaw resides within the fromSetIpBind function of the /goform/SetIpBind component, accessible via the httpd service. Manipulation of the page argument can lead to remote code execution.
Rated with a CVSSv3.1 score of 8.8 (High), this vulnerability is critical because it allows unauthenticated remote attackers to trigger the buffer overflow. The exploit has been publicly released, meaning the window between disclosure and active exploitation is effectively zero. Attackers can leverage this to gain full control over affected devices, pivot into internal networks, and establish persistence.
This isn’t just about router compromise; it’s about network perimeter collapse. Tenda devices are common in SMBs and home offices. A compromised router becomes a launchpad for further attacks, data exfiltration, or even a botnet node. Defenders must assume that any unpatched Tenda F456 1.0.0.5 router is already compromised or will be soon.
What This Means For You
- If your organization or remote workforce uses Tenda F456 1.0.0.5 routers, you need to isolate and patch them immediately. If no patch is available, replace them. This is a critical perimeter vulnerability with public exploits. Assume compromise and hunt for abnormal outbound connections or unauthorized access attempts from these devices.
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-2026-7078: Tenda F456 Router SetIpBind Buffer Overflow Attempt
title: CVE-2026-7078: Tenda F456 Router SetIpBind Buffer Overflow Attempt
id: scw-2026-04-27-ai-1
status: experimental
level: critical
description: |
Detects attempts to exploit CVE-2026-7078 by targeting the SetIpBind function in Tenda F456 routers. The exploit involves sending a POST request to '/goform/SetIpBind' with a manipulated 'page' parameter, leading to a buffer overflow. This rule specifically looks for the vulnerable URI and the presence of the 'page=' argument in the query string, indicating a potential exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-04-27
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-7078/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri: '/goform/SetIpBind'
cs-method: 'POST'
cs-uri-query|contains:
- 'page='
selection_base:
EventType: 'webserver-access'
condition: selection_base AND selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-7078 | Buffer Overflow | Tenda F456 version 1.0.0.5 |
| CVE-2026-7078 | Buffer Overflow | Vulnerable component: httpd |
| CVE-2026-7078 | Buffer Overflow | Vulnerable function: fromSetIpBind in /goform/SetIpBind |
| CVE-2026-7078 | Buffer Overflow | Manipulation of argument 'page' |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 27, 2026 at 06:15 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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