CVE-2025-5902

Name: CVE-2025-5902
Creator: NVD / NIST
Published: 2025-06-09T23:15:22.617+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 3.71%

Last modified Jun 17, 2026

CVE-2025-5902 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A vulnerability was found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This issue affects the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. EPSS estimates a 3.71% chance of exploitation in the next 30 days.

Description

A vulnerability was found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This issue affects the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument slaveIpList leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Metrics

CVSS 3.1

8.8/10

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

CVSS 4.0

7.4/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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

3.71%

88.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	T10 Firmware	4.1.8cu.5207

References

https://candle-throne-f75.notion.site/TOTOLINK-T10-setUpgradeFW-20bdf0aa11858089bc28f634bb140d00Exploit, Third Party Advisory
https://vuldb.com/?ctiid.311675Permissions Required, VDB Entry
https://vuldb.com/?id.311675Third Party Advisory, VDB Entry
https://vuldb.com/?submit.592246Third Party Advisory, VDB Entry
https://www.totolink.net/Product
https://candle-throne-f75.notion.site/TOTOLINK-T10-setUpgradeFW-20bdf0aa11858089bc28f634bb140d00Exploit, Third Party Advisory

Timeline

Published: Jun 9, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-5902?

How severe is CVE-2025-5902?

CVE-2025-5902 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 3.71% probability of exploitation in the next 30 days.

How do I fix CVE-2025-5902?

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-2025-5902?

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

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Source: NVD / NIST