CVE-2026-9428
Deferred Deferred - Pending Action

Stack-Based Buffer Overflow in Tenda F1202 Router

Vulnerability report for CVE-2026-9428, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: VulDB

Description

A vulnerability has been found in Tenda F1202 1.2.0.20(408). Affected is the function fromPPTPUserSetting of the file /goform/PPTPUserSetting. Such manipulation of the argument delno leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

CVSS Scores

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Meta Information

Published
2026-05-25
Last Modified
2026-05-25
Generated
2026-07-06
AI Q&A
2026-05-26
EPSS Evaluated
2026-07-04
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tenda f1202 1.2.0.20

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.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in the Tenda F1202 router, specifically in the function fromPPTPUserSetting within the file /goform/PPTPUserSetting. It is caused by improper handling of the argument 'delno', which leads to a stack-based buffer overflow. This means that an attacker can send specially crafted input remotely to overflow the buffer on the stack, potentially allowing them to execute arbitrary code or cause the device to crash.

Impact Analysis

The impact of this vulnerability is significant because it allows remote attackers to exploit the stack-based buffer overflow without user interaction. Successful exploitation can lead to complete compromise of the affected device, including unauthorized code execution, denial of service, or disruption of network services.

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