CVE-2025-65221

MEDIUM
2025-11-20 [email protected]
4.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 19:23 vuln.today
PoC Detected
Nov 21, 2025 - 17:25 vuln.today
Public exploit code
CVE Published
Nov 20, 2025 - 15:17 nvd
MEDIUM 4.3

Tags

Stack Overflow Tenda Buffer Overflow Ac21 Firmware

Description

Tenda AC21 V16.03.08.16 is vulnerable to Buffer Overflow via the list parameter of /goform/setPptpUserList.

Analysis

Tenda AC21 V16.03.08.16 is vulnerable to Buffer Overflow via the list parameter of /goform/setPptpUserList. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified under CWE-121. Tenda AC21 V16.03.08.16 is vulnerable to Buffer Overflow via the list parameter of /goform/setPptpUserList. Affected products include: Tenda Ac21 Firmware.

Affected Products

Tenda Ac21 Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +22
POC: +20

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CVE-2025-65221 vulnerability details – vuln.today
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