Denial of Service Vulnerability in TOTOLINK X5000R
CVE-2025-67445

6.5MEDIUM

Key Information:

Vendor

TOTOLINK
Status
X5000R
Vendor
CVE Published:
24 February 2026

What is CVE-2025-67445?

A denial-of-service vulnerability exists in the TOTOLINK X5000R where inadequate bounds checking in the CGI script /cgi-bin/cstecgi.cgi allows for massive memory allocation based on the CONTENT_LENGTH environment variable. If the lighttpd request size limit is not adequately enforced, an attacker can send a specially crafted large POST request, potentially causing memory exhaustion or a segmentation fault. This can lead to a crash of the management CGI, rendering the web interface unavailable and affecting the overall functionality of the device.

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References

http://totolink.com
https://github.com/DaRkSpOoOk/CVE-2025-67445

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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