Buffer Overflow Vulnerability in Tenda AC20 Router
CVE-2025-8810
8.7HIGH
Key Information:
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2025-8810?
A vulnerability exists in the Tenda AC20 router, specifically in the function strcpy located in the /goform/SetFirewallCfg file. This vulnerability can be exploited through a remote attack by manipulating the firewallEn argument, leading to a stack-based buffer overflow. The exploit has been publicly disclosed, presenting significant risks to unsecured devices.
Affected Version(s)
AC20 16.03.08.05
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
hundun (VulDB User)