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.
History

Tue, 24 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-02-24T14:57:17.080Z

Reserved: 2025-12-08T00:00:00.000Z

Link: CVE-2025-67445

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-24T15:21:36.707

Modified: 2026-02-24T15:21:36.707

Link: CVE-2025-67445

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.