Stack-based Buffer Overflow in Edimax EW-7478APC Product
CVE-2026-13563

8.7HIGH

Key Information:

Vendor

Edimax

Status
Ew-7478apc
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13563?

A vulnerability affecting the Edimax EW-7478APC version 1.04 has been identified in the POST Request Handler, specifically within the formL2TPSetup function. This flaw allows for a stack-based buffer overflow when the L2TPUserName parameter is improperly manipulated. Attackers can exploit this vulnerability remotely, posing significant security risks if left unaddressed. Despite being disclosed, there has been no response from the vendor regarding mitigation or further action.

Affected Version(s)

EW-7478APC 1.04

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-13563 - Proof of Concept

References

https://vuldb.com/vuln/374571
vdb-entrytechnical-description
https://vuldb.com/vuln/374571/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13563
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

wxhwxhwxh_mie (VulDB User)
VulDB CNA Team
.