CVE-2026-4975

Received Received - Intake

Stack-Based Buffer Overflow in Tenda AC15 POST Handler

Publication date: 2026-03-27

Last updated on: 2026-04-03

Assigner: VulDB

Description

A vulnerability has been found in Tenda AC15 15.03.05.19. This affects the function formSetCfm of the file /goform/setcfm of the component POST Request Handler. The manipulation of the argument funcpara1 leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-03-27

Last Modified

2026-04-03

Generated

2026-07-06

AI Q&A

2026-03-27

EPSS Evaluated

2026-07-05

NVD

CVE-2026-4975

EUVD

EUVD-2026-16811

Affected Vendors & Products

Vendor	Product	Version / Range
tenda	ac15_firmware	15.03.05.19_multi

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This vulnerability exists in the Tenda AC15 router, specifically in the function formSetCfm within the /goform/setcfm file, which handles POST requests.

An attacker can manipulate the argument funcpara1 to cause a stack-based buffer overflow, which means they can overwrite parts of the memory stack, potentially leading to arbitrary code execution or system crashes.

The attack can be performed remotely, meaning an attacker does not need physical access to the device to exploit this vulnerability.

The exploit has been publicly disclosed, increasing the risk of it being used in attacks.

Impact Analysis

Exploitation of this vulnerability can lead to severe impacts including unauthorized remote code execution, allowing attackers to take control of the affected device.

This can result in disruption of network services, interception or manipulation of network traffic, and potential use of the device as a foothold for further attacks within a network.

Because the vulnerability allows remote exploitation without user interaction, it poses a high risk to the security and availability of the device.

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