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CVE-2025-5902

TOTOLINK T10 Firmware buffer overflow

8.8 HIGHPublic exploitEPSS 5.93%
  1. Published9 Jun 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

TOTOLINK T10 Firmware4.1.8cu.5207

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-5902 being actively exploited?

CVE-2025-5902 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 5.93%.

How severe is CVE-2025-5902?

CVE-2025-5902 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 5.93% probability of exploitation.

Which products are affected by CVE-2025-5902?

Affected products include TOTOLINK T10 Firmware.

How do I fix CVE-2025-5902?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-5902 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.