Buffer Overflow Vulnerability in Totolink A3002MU Router
CVE-2026-93740

10CRITICAL

Key Information:

Vendor

Totolink
Status
A3002mu
Vendor
CVE Published:
18 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-93740?

A security flaw has been detected in the Totolink A3002MU router, particularly within the formWlEncrypt function located in the /boafrm directory. This vulnerability allows for a remote buffer overflow attack through manipulation of the 'submit-url' parameter. Attackers can exploit this flaw to execute unauthorized code, potentially compromising the device's functionality. With publicly available exploit code, it is crucial for users and administrators to take immediate steps to secure their affected devices.

Affected Version(s)

A3002MU Hh-B20211125.1046

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-2026-93740 - Proof of Concept

References

https://vuldb.com/vuln/407550
vdb-entrytechnical-description
https://vuldb.com/vuln/407550/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-93740
third-party-advisory

CVSS V4

Score:
10
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

sunnyyang (VulDB User)
.