CVE-2025-9935

Name: CVE-2025-9935
Creator: NVD / NIST
Published: 2025-09-04T10:42:37.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 3.00%

Last modified Jun 17, 2026

CVE-2025-9935 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. EPSS estimates a 3.00% chance of exploitation in the next 30 days.

Description

A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

5.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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

3.00%

85.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	N600r Firmware	4.3.0cu.7866_b20220506

References

https://github.com/mono7s/TOTOLINK/blob/main/N600R/TOTOLINK%20N600R%20Unauthorized_Command_Injection.mdExploit, Third Party Advisory
https://vuldb.com/?ctiid.322337Permissions Required, VDB Entry
https://vuldb.com/?id.322337Third Party Advisory, VDB Entry
https://vuldb.com/?submit.643088Third Party Advisory, VDB Entry
https://www.totolink.net/Product

Timeline

Published: Sep 4, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-9935?

How severe is CVE-2025-9935?

CVE-2025-9935 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 3.00% probability of exploitation in the next 30 days.

How do I fix CVE-2025-9935?

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-2025-9935?

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

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Source: NVD / NIST