Stack-Based Buffer Overflow in Tenda i3 Router
CVE-2026-3803
8.7HIGH
Key Information:
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-3803?
A vulnerability exists in the Tenda i3 router version 1.0.0.6 (2204) related to the function formWifiMacFilterGet. An attacker can manipulate an argument index to trigger a stack-based buffer overflow. This exploit can be executed remotely, exposing the router to potential attacks. As details of the exploit are publicly available, users of affected versions should take immediate action to mitigate risks.
Affected Version(s)
i3 1.0.0.6(2204)
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.
References
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
Svigo (VulDB User)