CVE-2025-67445

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/24/2026

Last Modified2/27/2026

Sourcenvd

Honeypot Sightings0

Affected Products

totolink:x5000rtotolink:x5000r_firmware

Weaknesses (CWE)

CWE-400

References

http://totolink.com(cve@mitre.org)

https://github.com/DaRkSpOoOk/CVE-2025-67445(cve@mitre.org)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.