Buffer Overflow Vulnerability in Edimax EW-7478APC by Edimax
CVE-2026-19961

9.4CRITICAL

Key Information:

Vendor

Edimax

Status
Ew-7478apc
Vendor
CVE Published:
16 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-19961?

A buffer overflow vulnerability has been identified in the Edimax EW-7478APC's formWlSiteSurvey function, specifically in the /goform/formWlSiteSurvey file. Manipulating the 'selSSID' argument could allow remote attackers to execute arbitrary code. This vulnerability is particularly concerning as it can be exploited without physical access to the device. As the exploit has been made public, immediate attention to this flaw is critical to safeguard against potential threats. Despite previous outreach attempts, Edimax has not acknowledged this vulnerability, leaving users at risk.

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-2026-19961 - Proof of Concept

References

https://vuldb.com/vuln/391138
vdb-entrytechnical-description
https://vuldb.com/vuln/391138/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19961
third-party-advisory

CVSS V4

Score:
9.4
Severity:
CRITICAL
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
.