CVE-2026-4552

Received Received - Intake

Stack-Based Buffer Overflow in Tenda F453 Parameters Handler

Publication date: 2026-03-22

Last updated on: 2026-04-02

Assigner: VulDB

Description

A vulnerability was determined in Tenda F453 1.0.0.3. This issue affects the function fromVirtualSer of the file /goform/VirtualSer of the component Parameters Handler. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-22

Last Modified

2026-04-02

Generated

2026-07-06

AI Q&A

2026-03-22

EPSS Evaluated

2026-07-05

NVD

CVE-2026-4552

EUVD

EUVD-2026-14313

Affected Vendors & Products

Vendor	Product	Version / Range
tenda	f453_firmware	1.0.0.3

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.

Attack-Flow Graph

Executive Summary

[{'type': 'paragraph', 'content': 'CVE-2026-4552 is a stack-based buffer overflow vulnerability in the Tenda F453 router, version 1.0.0.3. It occurs in the fromVirtualSer function of the httpd service, which processes a user-supplied parameter named "page". This parameter is passed to the sprintf function without any bounds checking, allowing an attacker to overflow the stack buffer by sending an excessively long "page" value in a POST request to the /goform/VirtualSer endpoint.'}, {'type': 'paragraph', 'content': 'This vulnerability can be exploited remotely and may lead to denial of service or remote code execution on the affected device.'}] [1]

Impact Analysis

Exploiting this vulnerability can allow an attacker to cause a denial of service or execute arbitrary code remotely on the affected Tenda F453 router. This means the attacker could disrupt network connectivity or potentially take control of the device, leading to further compromise of the network or connected systems.

Compliance Impact

I don't know

Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by sending a specially crafted POST request to the /goform/VirtualSer endpoint of the Tenda F453 router running version 1.0.0.3. The request should include an excessively long "page" parameter to test for a stack-based buffer overflow.'}, {'type': 'paragraph', 'content': 'A detection command example using curl would be:'}, {'type': 'list_item', 'content': 'curl -X POST http://<target-ip>/goform/VirtualSer -d "page=$(python3 -c \'print("A"*1000)\')"'}, {'type': 'paragraph', 'content': 'If the device crashes, becomes unresponsive, or exhibits abnormal behavior after this request, it indicates the presence of the vulnerability.'}] [1]

Mitigation Strategies

Immediate mitigation steps include:

Restrict remote access to the affected device, especially blocking access to the /goform/VirtualSer endpoint.
Apply any available firmware updates from Tenda that address this vulnerability.
If firmware updates are not available, consider disabling the vulnerable service or isolating the device from untrusted networks.
Monitor network traffic for suspicious POST requests targeting the /goform/VirtualSer endpoint with unusually long parameters.

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