CVE-2025-67445 — HIGH (7.5)

Vulnerability Description

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	X5000R Firmware	9.1.0cu.2415_b20250515
Totolink	X5000R	-

Related Weaknesses (CWE)

CWE-400

References

http://totolink.comProduct
https://github.com/DaRkSpOoOk/CVE-2025-67445ExploitThird Party Advisory

FAQ

What is CVE-2025-67445?

CVE-2025-67445 is a vulnerability with a CVSS score of 7.5 (HIGH). TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CON...

How severe is CVE-2025-67445?

CVE-2025-67445 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-67445?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink X5000R Firmware, Totolink X5000R.