CVE-2026-6124
Received Received - Intake
Remote Stack-Based Buffer Overflow in Tenda F451 httpd Component

Publication date: 2026-04-12

Last updated on: 2026-04-29

Assigner: VulDB

Description
A vulnerability was determined in Tenda F451 1.0.0.7. This vulnerability affects the function fromSafeMacFilter of the file /goform/SafeMacFilter of the component httpd. Executing a manipulation of the argument page/menufacturer can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
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Meta Information
Published
2026-04-12
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-04-12
EPSS Evaluated
2026-06-15
NVD
CVE-2026-6124
EUVD
EUVD-2026-21726
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
tenda f451_firmware 1.0.0.7
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Exploitability
CWE
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KEV
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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-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Compliance Impact

The provided information does not specify how the vulnerability in Tenda F451 1.0.0.7 impacts compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

CVE-2026-6124 is a stack-based buffer overflow vulnerability in the fromSafeMacFilter function of the Tenda F451 firmware version 1.0.0.7. This function processes user input parameters, specifically "page" and "menufacturer" (manufacturer). When the "menufacturer" parameter is empty, the firmware uses the variable v6 in a sprintf call without checking the length, which leads to a buffer overflow in the buffer "s".

An attacker can exploit this vulnerability remotely by sending a specially crafted request to the "/goform/SafeMacFilter" endpoint with an oversized "page" parameter (for example, 2048 bytes). This can cause the device to crash or potentially allow remote code execution.

Impact Analysis

This vulnerability can impact you by allowing a remote attacker to cause a denial of service (DoS) on the affected device, making it unavailable or unstable.

More severely, the attacker may achieve remote code execution, which could allow them to take control of the device, manipulate its functions, or use it as a foothold to attack other devices on the network.

Detection Guidance

This vulnerability can be detected by sending a specially crafted HTTP POST request to the vulnerable device's "/goform/SafeMacFilter" endpoint with an oversized "page" parameter (e.g., 2048 bytes). Monitoring for such requests or unusual traffic to this endpoint may indicate exploitation attempts.

A detection command example using curl could be:

  • curl -X POST http://<target-ip>/goform/SafeMacFilter -d "page=$(python3 -c 'print("A"*2048)')&menufacturer=test"

This command sends a large payload to test if the device is vulnerable to the stack-based buffer overflow.

Mitigation Strategies

Immediate mitigation steps include restricting access to the vulnerable "/goform/SafeMacFilter" endpoint by implementing network-level controls such as firewall rules to block unauthorized or external access.

Additionally, monitor network traffic for suspicious requests targeting this endpoint with unusually large parameters.

If possible, update the device firmware to a version where this vulnerability is patched or contact the vendor for a security update.

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