CVE-2025-3665

Name: CVE-2025-3665
Creator: NVD / NIST
Published: 2025-04-16T03:15:18.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2025-3665 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. A vulnerability has been found in TOTOLINK A3700R 9.1.2u.5822_B20200513 and classified as critical. Affected by this vulnerability is the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

A vulnerability has been found in TOTOLINK A3700R 9.1.2u.5822_B20200513 and classified as critical. Affected by this vulnerability is the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi. The manipulation leads to improper access controls. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.50%

39.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	A3700r Firmware	9.1.2u.5822_b20200513

References

https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setSmartQosCfg-1cb53a41781f80ce9b7aca2c6ff9bea4?pvs=4Exploit
https://vuldb.com/?ctiid.304843Permissions Required, VDB Entry
https://vuldb.com/?id.304843Third Party Advisory, VDB Entry
https://vuldb.com/?submit.551297Third Party Advisory, VDB Entry
https://www.totolink.net/Product
https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setSmartQosCfg-1cb53a41781f80ce9b7aca2c6ff9bea4Exploit

Timeline

Published: Apr 16, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-3665?

How severe is CVE-2025-3665?

CVE-2025-3665 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2025-3665?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-3665?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST