Buffer Overflow Vulnerability in Totolink A3002MU Product by Totolink
CVE-2026-90607

9.4CRITICAL

Key Information:

Vendor

Totolink
Status
A3002mu
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90607?

A buffer overflow vulnerability exists in the Totolink A3002MU router affecting the 'formNewSchedule' function within the boa component. This vulnerability allows an attacker to manipulate the 'submit-url' argument, leading to potential remote code execution. With the exploit now publicly available, this vulnerability poses a significant threat to devices running the affected firmware version, necessitating immediate attention and corrective measures from users and administrators.

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-2026-90607 - Proof of Concept

References

https://vuldb.com/vuln/403189
vdb-entrytechnical-description
https://vuldb.com/vuln/403189/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90607
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

sunnyyang (VulDB User)
.