PT-2025-44745 · Tenda · Tenda Ac21

Lx-Lx · Published 2025-11-02 · Updated 2025-11-08 · CVE-2025-12611

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

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

Description A flaw exists in the Tenda AC21 device. This issue is related to a buffer overflow in the formSetPPTPServer function within the /goform/SetPptpServerCfg file. Manipulation of the startIp argument can trigger this overflow. Remote exploitation is possible. The exploit is publicly available.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the /goform/SetPptpServerCfg file to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

CWE-120

Related Identifiers

BDU:2025-14645

CVE-2025-12611

Affected Products

Tenda Ac21

References · 12

• 🔥 https://github.com/LX-LX88/cve/issues/10 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-12611 · Security Note
• https://bdu.fstec.ru/vul/2025-14645 · Security Note
• https://osv.dev/vulnerability/CVE-2025-12611 · Vendor Advisory
• https://vuldb.com/?ctiid.330906 · Note
• https://vuldb.com/?id.330906 · Note
• https://twitter.com/cracbot/status/1987112911047958959 · Twitter Post
• https://t.me/CVEtracker/36397 · Telegram Post
• https://tenda.com.cn · Note
• https://twitter.com/cracbot/status/1986750524956520706 · Twitter Post
• https://vuldb.com/?submit.678491 · Note
• https://t.me/cveNotify/141280 · Telegram Post