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7.5

Tenda AX3 Router: Denial of Service via Malformed Device ID

CVE-2025-63147 · published 11 months ago
Summary

The Tenda AX3 router's saveParentControlInfo function can crash if sent a specially crafted device ID, causing the router to become unresponsive. This can be exploited by attackers to take the router offline. To protect your network, update your Tenda AX3 router to the latest available software version.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
tenda ax3_firmware 16.03.12.10
cpe:2.3:o:tenda:ax3_firmware:16.03.12.10:*:*:*:*:*:*:*
Original advisory text
Tenda AX3 V16.03.12.10_CN was discovered to contain a stack overflow in the deviceId parameter of the saveParentControlInfo function. This vulnerability allows attackers to cause a Denial of Servic...
Tenda AX3 V16.03.12.10_CN was discovered to contain a stack overflow in the deviceId parameter of the saveParentControlInfo function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
Timeline
Published10 Nov 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-63147 · NVD
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