Buffer Overflow Vulnerability in Tenda AC21 Routers
CVE-2025-65221

4.3MEDIUM

Key Information:

Vendor

Tenda
Status
AC21 Router
Vendor
CVE Published:
20 November 2025

What is CVE-2025-65221?

The Tenda AC21 Router version V16.03.08.16 is susceptible to a Buffer Overflow vulnerability through the 'list' parameter in the /goform/setPptpUserList endpoint. This flaw can potentially allow attackers to execute arbitrary code or modify sensitive settings, posing significant risks to network integrity and security. Proper remediation and patches are essential for users to safeguard their devices against potential exploitation.

References

https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/V...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-65221 : Buffer Overflow Vulnerability in Tenda AC21 Routers