CVE-2026-19959: Stack-based Buffer Overflow in Edimax EW-7478APC
A weakness has been identified in Edimax EW-7478APC 1.04. This affects the function formWanTcpipSetup of the file /goform/formWanTcpipSetup. This manipulation of the argument pppUserName causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
AI Analysis
Technical Summary
This vulnerability affects Edimax EW-7478APC firmware version 1.04. The flaw is a stack-based buffer overflow triggered by improper handling of the pppUserName argument in the formWanTcpipSetup function located in /goform/formWanTcpipSetup. Successful exploitation can be performed remotely. Public exploit code exists, increasing the risk of attacks. The vendor was notified but has not provided any response or fix. No official remediation or patch has been published as of the disclosure date.
Potential Impact
The vulnerability allows remote attackers to cause a stack-based buffer overflow, which can lead to arbitrary code execution or denial of service on the affected device. Given the critical CVSS score of 9.4 and the availability of public exploit code, this poses a significant risk to devices running the affected firmware version.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a fix, users should consider mitigating exposure by restricting remote access to the device management interface and monitoring for suspicious activity until an official patch is available.
CVE-2026-19959: Stack-based Buffer Overflow in Edimax EW-7478APC
Description
A weakness has been identified in Edimax EW-7478APC 1.04. This affects the function formWanTcpipSetup of the file /goform/formWanTcpipSetup. This manipulation of the argument pppUserName causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS v4.0
Score 9.4critical
Affected software
Edimax
EW-7478APC
cpe:2.3:a:edimax:ew-7478apc:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Edimax EW-7478APC firmware version 1.04. The flaw is a stack-based buffer overflow triggered by improper handling of the pppUserName argument in the formWanTcpipSetup function located in /goform/formWanTcpipSetup. Successful exploitation can be performed remotely. Public exploit code exists, increasing the risk of attacks. The vendor was notified but has not provided any response or fix. No official remediation or patch has been published as of the disclosure date.
Potential Impact
The vulnerability allows remote attackers to cause a stack-based buffer overflow, which can lead to arbitrary code execution or denial of service on the affected device. Given the critical CVSS score of 9.4 and the availability of public exploit code, this poses a significant risk to devices running the affected firmware version.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a fix, users should consider mitigating exposure by restricting remote access to the device management interface and monitoring for suspicious activity until an official patch is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-16T07:07:38.069Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a823caabf8831d539bd729c
Added to database: 08/16/2026, 22:41:46 UTC
Last enriched: 08/24/2026, 13:13:02 UTC
Last updated: 10/01/2026, 05:08:50 UTC
Views: 178
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