CVE-2026-7082
Received Received - Intake
Remote Buffer Overflow in Tenda F456 httpd Component

Publication date: 2026-04-27

Last updated on: 2026-04-30

Assigner: VulDB

Description
A flaw has been found in Tenda F456 1.0.0.5. Affected by this vulnerability is the function formWrlExtraSet of the file /goform/WrlExtraSet of the component httpd. Executing a manipulation of the argument Go can lead to buffer overflow. The attack can be executed remotely. The exploit has been published and may be used.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-04-27
Last Modified
2026-04-30
Generated
2026-06-16
AI Q&A
2026-04-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-7082
EUVD
EUVD-2026-25765
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
tenda f456_firmware 1.0.0.5
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

The CVE-2026-7082 vulnerability affects the Tenda F456 router version 1.0.0.5. It is a stack-based buffer overflow in the HTTP daemon component, specifically in the function formWrlExtraSet. This function processes a user-supplied parameter named "GO" without validating its length. The unchecked data is used in a sprintf call, which can overflow the stack-based buffer.

An attacker can exploit this by sending a specially crafted HTTP POST request to the /goform/WrlExtraSet endpoint with an excessively long "GO" parameter, causing the buffer overflow.

Compliance Impact

The provided information does not specify how the CVE-2026-7082 vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

Impact Analysis

Exploiting this vulnerability can lead to denial of service (DoS) or remote code execution (RCE) on the affected device.

This means an attacker could crash the device or run arbitrary code remotely, potentially taking control of the router.

Detection Guidance

This vulnerability can be detected by monitoring for suspicious HTTP POST requests sent to the /goform/WrlExtraSet endpoint with an unusually long or excessively large "GO" parameter.

A practical detection method is to capture and analyze network traffic targeting the Tenda F456 router, specifically looking for POST requests to /goform/WrlExtraSet with large payloads in the "GO" parameter.

Example command using curl to test if the device is vulnerable by sending a large payload in the "GO" parameter:

  • curl -X POST http://[router_ip]/goform/WrlExtraSet -d "GO=$(python3 -c 'print("A"*1000)')"

Alternatively, network intrusion detection systems (NIDS) can be configured to alert on HTTP POST requests to /goform/WrlExtraSet with unusually large "GO" parameters.

Mitigation Strategies

Immediate mitigation steps include restricting access to the affected device's management interface to trusted networks only, such as limiting access via firewall rules.

Avoid exposing the Tenda F456 router's HTTP management interface to the internet or untrusted networks.

Monitor and block suspicious HTTP POST requests to the /goform/WrlExtraSet endpoint, especially those with large "GO" parameter values.

If possible, update the device firmware to a version that patches this vulnerability once it becomes available from the vendor.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-7082. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart