CVE-2026-4902
Received Received - Intake

Stack-Based Buffer Overflow in Tenda AC5 POST Handler

Vulnerability report for CVE-2026-4902, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-03-26

Last updated on: 2026-03-31

Assigner: VulDB

Description

A vulnerability was detected in Tenda AC5 15.03.06.47. This affects the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.

CVSS Scores

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Meta Information

Published
2026-03-26
Last Modified
2026-03-31
Generated
2026-07-06
AI Q&A
2026-03-27
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tenda ac5_firmware 15.03.06.47

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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).
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-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in the Tenda AC5 router firmware version 15.03.06.47, specifically in the function fromAddressNat within the /goform/addressNat component that handles POST requests.

The issue arises from improper handling of the 'page' argument, which can be manipulated to cause a stack-based buffer overflow.

This overflow can be exploited remotely, allowing an attacker to potentially execute arbitrary code or disrupt the normal operation of the device.

The exploit for this vulnerability is publicly available.

Impact Analysis

Exploitation of this vulnerability can lead to severe impacts including remote code execution, denial of service, or unauthorized control over the affected Tenda AC5 device.

An attacker could use this to disrupt network connectivity, intercept or manipulate network traffic, or use the compromised device as a foothold for further attacks within a network.

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