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8.7

TOTOLINK Router: Remote Code Execution from Malicious Internet Requests

CVE-2025-4732 · published 1 year ago
Summary

A critical flaw in the TOTOLINK A3002R and A3002RU routers allows hackers to take control of the device from the internet. This can happen when the router processes certain types of internet requests. To stay safe, update your router's software to the latest version if available.

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
totolink a3002r_firmware 3.0.0-b20230809.1615
cpe:2.3:o:totolink:a3002r_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:*
totolink a3002ru_firmware 3.0.0-b20230809.1615
cpe:2.3:o:totolink:a3002ru_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:*
Original advisory text
A vulnerability classified as critical was found in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615. This vulnerability affects unknown code of the file /boafrm/formFilter of the component HTTP PO...
A vulnerability classified as critical was found in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615. This vulnerability affects unknown code of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation of the argument ip6addr leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
8.7 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-119Buffer Overflow
CWE-120Classic Buffer Overflow
Timeline
Published16 May 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-4732 · NVD
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