Skip to main content
HIGH

CVE-2025-4496

TOTOLINK T10/A3100R/A950RG/A800R/N600R/A3000RU/A810R cstecgi.cgi CloudACMunualUpdate buffer overflow

CVSS v3

8.8

HIGH

EPSS Score

1.2 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

poc

SSVC status

Description

A vulnerability was found in TOTOLINK T10, A3100R, A950RG, A800R, N600R, A3000RU and A810R 4.1.8cu.5241_B20210927. It has been declared as critical. This vulnerability affects the function CloudACMunualUpdate of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Technical details

Published
2025-05-10
Last Modified
2025-07-29

Frequently asked questions

What is CVE-2025-4496?

A vulnerability was found in TOTOLINK T10, A3100R, A950RG, A800R, N600R, A3000RU and A810R 4.1.8cu.5241_B20210927. It has been declared as critical. This vulnerability affects the function CloudACMunualUpdate of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Is CVE-2025-4496 actively exploited?

A proof-of-concept exploit exists for CVE-2025-4496, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-4496?

CVE-2025-4496 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2025-4496 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IPSearch CVEsSIEM & TIP integrations

No credit card required · 500 free checks/month · Free API key

Other 2025 vulnerabilities worth triaging

Ranked by exploit probability (EPSS).

Back to CVE Database