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7.5

Tenda AX1803 Router Can be Disabled by Malicious Network Request

CVE-2025-70646 · published 9 months ago
Summary

A security issue in the Tenda AX1803 router can be exploited by a hacker sending a specially crafted network request, potentially causing the router to become unresponsive. This can disrupt internet access for users. Update the router's firmware to the latest version to fix this issue.

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 ax1803_firmware 1.0.0.1
cpe:2.3:o:tenda:ax1803_firmware:1.0.0.1:*:*:*:*:*:*:*
Original advisory text
Tenda AX1803 v1.0.0.1 was discovered to contain a stack overflow in the security parameter of the sub_72290 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a cr...
Tenda AX1803 v1.0.0.1 was discovered to contain a stack overflow in the security parameter of the sub_72290 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-121Stack-based Buffer Overflow
Timeline
Published21 Jan 2026
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-70646 · NVD
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