CVE-2026-75013
Received Received - Intake

Null Pointer Dereference in TOTOLINK EX1200L

Publication date: 2026-08-17

Last updated on: 2026-08-17

Assigner: VulDB

Description
A vulnerability was detected in TOTOLINK EX1200L 9.3.5u.6146_B20201023. This affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi. The manipulation results in null pointer dereference. The attack can be launched remotely. The exploit is now public and may be used.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-17
Last Modified
2026-08-17
Generated
2026-08-18
AI Q&A
2026-08-17
EPSS Evaluated
N/A
NVD
CVE-2026-75013
EUVD
EUVD-2026-60363

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
totolink ex1200l 9.3.5u.6146_b20201023

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-404 The product does not release or incorrectly releases a resource before it is made available for re-use.
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is a null pointer dereference flaw in TOTOLINK EX1200L version 9.3.5u.6146_B20201023. It exists in the setWizardCfg function of the /cgi-bin/cstecgi.cgi file. A remote attacker can exploit this to cause a system crash or potentially execute arbitrary code.

Detection Guidance

To detect this vulnerability, monitor for crashes in the TOTOLINK EX1200L web management interface process (cstecgi.cgi). Send a crafted POST request to /cgi-bin/cstecgi.cgi with the JSON payload {"topicurl":"setWizardCfg"} and observe if the service becomes unresponsive or crashes.

Impact Analysis

The impact includes remote denial of service (DoS) attacks where the device may crash or become unresponsive. Since the exploit is public, attackers could target unpatched devices to disrupt network operations or gain unauthorized access.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and availability. Organizations must patch systems promptly to maintain compliance.

Mitigation Strategies

Immediately update TOTOLINK EX1200L firmware to the latest patched version. Disable remote access to the device's web interface if not required. Monitor network traffic for suspicious activity targeting /cgi-bin/cstecgi.cgi.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-75013. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart