CVE-2026-13563: Stack-based Buffer Overflow in Edimax EW-7478APC
A vulnerability has been found in Edimax EW-7478APC 1.04. This impacts the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. Such manipulation of the argument L2TPUserName leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
AI Analysis
Technical Summary
CVE-2026-13563 is a stack-based buffer overflow vulnerability in Edimax EW-7478APC version 1.04. It affects the formL2TPSetup function in the POST Request Handler component, where improper handling of the L2TPUserName argument leads to overflow conditions. This vulnerability can be exploited remotely without user interaction and requires low attack complexity and privileges. The vendor was notified but has not issued a fix or advisory. No known exploits are reported in the wild at this time.
Potential Impact
Successful exploitation can lead to arbitrary code execution on the affected device, potentially allowing an attacker to take control remotely. The vulnerability is remotely exploitable with no user interaction and low complexity, making it a significant risk for affected devices running version 1.04 of the Edimax EW-7478APC.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official fix is available, users should consider disabling the vulnerable service or restricting network access to the device until a patch is released.
CVE-2026-13563: Stack-based Buffer Overflow in Edimax EW-7478APC
Description
A vulnerability has been found in Edimax EW-7478APC 1.04. This impacts the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. Such manipulation of the argument L2TPUserName leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS v4.0
Score 8.7high
Affected software
cpe:2.3:a:edimax:ew-7478apc:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13563 is a stack-based buffer overflow vulnerability in Edimax EW-7478APC version 1.04. It affects the formL2TPSetup function in the POST Request Handler component, where improper handling of the L2TPUserName argument leads to overflow conditions. This vulnerability can be exploited remotely without user interaction and requires low attack complexity and privileges. The vendor was notified but has not issued a fix or advisory. No known exploits are reported in the wild at this time.
Potential Impact
Successful exploitation can lead to arbitrary code execution on the affected device, potentially allowing an attacker to take control remotely. The vulnerability is remotely exploitable with no user interaction and low complexity, making it a significant risk for affected devices running version 1.04 of the Edimax EW-7478APC.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official fix is available, users should consider disabling the vulnerable service or restricting network access to the device until a patch is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-06-28T16:12:55.531Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a425fd627e9c79719d0b4e9
Added to database: 06/29/2026, 12:06:46 UTC
Last enriched: 06/29/2026, 12:21:26 UTC
Last updated: 06/29/2026, 17:05:31 UTC
Views: 21
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