Stack-Based Buffer Overflow in Edimax EW-7478APC Due to POST Request Manipulation
CVE-2026-13564

8.7HIGH

Key Information:

Vendor

Edimax

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13564?

A stack-based buffer overflow vulnerability exists in the Edimax EW-7478APC version 1.04, specifically within the formPPPoESetup function of the POST Request Handler. This vulnerability can be triggered remotely by manipulating the pppUserName parameter. If exploited, it can lead to unauthorized access or cause the system to crash. Despite attempts to inform the vendor of the issue, there has been no response regarding remediation, raising concerns about the device's security.

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-2026-13564 - Proof of Concept

References

https://vuldb.com/vuln/374572
vdb-entrytechnical-description
https://vuldb.com/vuln/374572/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13564
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
.