Stack-Based Buffer Overflow Vulnerability in EFM ipTIME A8004T Router
CVE-2026-8234

8.7HIGH

Key Information:

Vendor

Efm

Status
Iptime A8004t
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8234?

A security vulnerability has been identified in EFM's ipTIME A8004T router version 14.18.2, specifically within the function formWifiBasicSet located in the file /goform/WifiBasicSet. This vulnerability allows for a stack-based buffer overflow due to improper handling of the security_5g argument, potentially enabling remote attackers to execute arbitrary code. Despite efforts to inform the vendor about this critical issue, no response was received, increasing the urgency for users to secure their devices.

Affected Version(s)

ipTIME A8004T 14.18.2

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-2026-8234 - Proof of Concept

References

https://vuldb.com/vuln/362454
vdb-entrytechnical-description
https://vuldb.com/vuln/362454/cti
signaturepermissions-required
https://vuldb.com/submit/808865
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
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

kiciot (VulDB User)
VulDB CNA Team
.