PT-2025-47585 · Tenda · Tenda Ac21

Published 2025-11-20 · Updated 2025-11-25 · CVE-2025-65220

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Tenda AC21 version 16.03.08.16

Description The Tenda AC21 router version 16.03.08.16 contains a buffer overflow issue. This occurs in the /goform/SetVirtualServerCfg API endpoint through the list parameter.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the /goform/SetVirtualServerCfg endpoint.

Exploit

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

BDU:2025-14736

CVE-2025-65220

Affected Products

Tenda Ac21

References · 8

• 🔥 https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN1.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-65220 · Security Note
• https://osv.dev/vulnerability/CVE-2025-65220 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-14736 · Security Note
• https://t.me/CVEtracker/37826 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1991542778468216968 · Twitter Post
• https://t.me/cveNotify/143618 · Telegram Post
• https://twitter.com/CVEnew/status/1991531289791590718 · Twitter Post