PT-2025-16550 · Totolink · Totolink A3700R

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Published

2025-04-15

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Updated

2025-04-16

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CVE-2025-3663

CVSS v3.1

8.2

High

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Name of the Vulnerable Software and Affected Versions TOTOLINK A3700R version 9.1.2u.5822 B20200513
Description A critical vulnerability has been found in the TOTOLINK A3700R, affecting the function setWiFiEasyCfg/setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi in the Password Handler component. This issue leads to improper access controls and can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted about this disclosure but did not respond.
Recommendations For TOTOLINK A3700R version 9.1.2u.5822 B20200513, as a temporary workaround, consider disabling the setWiFiEasyCfg and setWiFiEasyGuestCfg functions until a patch is available. Restrict access to the /cgi-bin/cstecgi.cgi file to minimize the risk of exploitation. Avoid using the vulnerable Password Handler component until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Improper Access Control

Incorrect Privilege Assignment

Weakness Enumeration

CWE-284CWE-266

Related Identifiers

BDU:2025-05807
CVE-2025-3663

Affected Products

Totolink A3700R