Buffer Overflow Vulnerability in Tenda AC21 Router
CVE-2025-10838
8.7HIGH
Key Information:
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2025-10838?
A buffer overflow vulnerability has been identified in the Tenda AC21 router, specifically in the function sub_45BB10 of the /goform/WifiExtraSet file. This flaw resides in the argument wpapsk_crypto, which can be manipulated to execute a successful attack. Attackers can exploit this vulnerability remotely, and there are known public exploits available, making devices running the affected version susceptible to unauthorized access or control.
Affected Version(s)
AC21 16.03.08.16
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
QMSSDXN (VulDB User)