PT-2026-3840 · Tenda · Tenda Ax3

Published 2026-01-21 · Updated 2026-01-21 · CVE-2025-69763

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 AX3 firmware version 16.03.12.11

Description The Tenda AX3 firmware version 16.03.12.11 contains a stack overflow in the formSetIptv function through the vlanId parameter. This flaw can lead to memory corruption and potentially allow for remote code execution.

Recommendations Update to a newer version of the firmware that addresses this issue. As a temporary workaround, restrict access to the formSetIptv function until a patch is available.

Exploit

Fix

RCE

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

BDU:2026-00946

CVE-2025-69763

Affected Products

Tenda Ax3

References · 6

• 🔥 https://river-brow-763.notion.site/Tenda-AX3-Buffer-Overflow-in-formSetIptv-2c9a595a7aef8025a3c6c4b102d95dd4?source=copy_link · Exploit
• 🔥 https://river-brow-763.notion.site/Tenda-AX3-Buffer-Overflow-in-formSetIptv-2c9a595a7aef8025a3c6c4b102d95dd4 · Exploit
• https://osv.dev/vulnerability/CVE-2025-69763 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-69763 · Security Note
• https://bdu.fstec.ru/vul/2026-00946 · Security Note
• https://t.me/CVEtracker/42680 · Telegram Post