Buffer Overflow Vulnerability in Totolink A3002MU Product
CVE-2026-90608

9.4CRITICAL

Key Information:

Vendor

Totolink
Status
A3002mu
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90608?

A significant buffer overflow vulnerability has been identified in the Totolink A3002MU Hh-B20211125.1046. This flaw resides in the function formPortFw within the file path /boafrm/formPortFw of the component boa. The vulnerability can be exploited by manipulating the 'service_type' argument, enabling potential attackers to execute remote code. The exploit has been publicly disclosed, emphasizing the need for immediate attention to mitigate the risks associated with this issue.

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-2026-90608 - Proof of Concept

References

https://vuldb.com/vuln/403190
vdb-entrytechnical-description
https://vuldb.com/vuln/403190/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90608
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)
.