CVE-2026-76590
Received Received - Intake

Stack-Based Buffer Overflow in TRENDnet TEW-755AP

Vulnerability report for CVE-2026-76590, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: VulDB

Description

A vulnerability was identified in TRENDnet TEW-755AP up to 20260702. Affected by this issue is some unknown functionality of the file /cgi-bin/wan.cgi of the component ssi. Such manipulation of the argument cameo.wan.wan_pppoe_password_00 leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
trendnet tew-755ap to 20260702 (inc)

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 is a stack-based buffer overflow in TRENDnet TEW-755AP devices running firmware up to 20260702. It exists in the /cgi-bin/wan.cgi file due to improper handling of the cameo.wan.wan_pppoe_password_00 argument. Attackers can remotely exploit this to cause a buffer overflow, potentially leading to arbitrary code execution.

Impact Analysis

If exploited, this vulnerability could allow remote attackers to take control of the affected device, execute malicious code, or cause denial-of-service conditions. Since the exploit is publicly available, the risk of attack is higher. Users should update firmware or apply mitigations immediately.

Mitigation Strategies

Immediately update the TRENDnet TEW-755AP firmware to the latest version to patch the stack-based buffer overflow vulnerability in the /cgi-bin/wan.cgi component. Disable remote access to the device if not required and restrict network access to trusted sources only.

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