Buffer Overflow Vulnerability in Tenda AC21 Router
CVE-2025-65226

4.3MEDIUM

Key Information:

Vendor

Tenda
Status
Tenda AC21
Vendor
CVE Published:
20 November 2025

What is CVE-2025-65226?

The Tenda AC21 router, specifically version V16.03.08.16, is exposed to a buffer overflow vulnerability due to improper handling of the deviceId parameter in the /goform/saveParentControlInfo endpoint. This flaw can potentially allow attackers to execute arbitrary code by sending specially crafted input, which could compromise the device and the network it operates within.

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-2025-65226 : Buffer Overflow Vulnerability in Tenda AC21 Router