Buffer Overflow Vulnerability in Totolink A3002MU
CVE-2026-90606

9.4CRITICAL

Key Information:

Vendor

Totolink
Status
A3002mu
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90606?

A security weakness in the Totolink A3002MU router's ipv6 setup process allows for remote exploitation through a buffer overflow caused by improper handling of the 'static_ipv6' argument. The vulnerability resides in the file '/boafrm/formIpv6Setup' within its 'boa' component, enabling attackers to manipulate input and potentially compromise the device. This issue has been publicly disclosed, making it critical for users and administrators to implement proper security measures immediately.

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-2026-90606 - Proof of Concept

References

https://vuldb.com/vuln/403188
vdb-entrytechnical-description
https://vuldb.com/vuln/403188/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90606
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)
.