Buffer Overflow Vulnerability in Totolink A3002MU Product
CVE-2026-90605

9.4CRITICAL

Key Information:

Vendor

Totolink
Status
A3002mu
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90605?

A vulnerability exists in the Totolink A3002MU that allows an unauthorized remote attacker to exploit the formFilter function in the boa component. This occurs via a malformed IP address input, specifically targeting the ip6addr argument. Successful exploitation can lead to a buffer overflow condition, potentially allowing the attacker to execute arbitrary code or crash the affected device. This flaw has been publicly disclosed, emphasizing the importance of prompt action and remediation.

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-2026-90605 - Proof of Concept

References

https://vuldb.com/vuln/403187
vdb-entrytechnical-description
https://vuldb.com/vuln/403187/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90605
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)
.