CVE-2026-1149
Remote Command Injection in Totolink LR350 POST Handler
Publication date: 2026-01-19
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| totolink | lr350 | 9.3.5u.6369_b20220309 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-77 | The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. |
| CWE-74 | The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a command injection flaw in the Totolink LR350 router firmware version 9.3.5u.6369_B20220309. It occurs in the setDiagnosisCfg function of the /cgi-bin/cstecgi.cgi file, where the 'ip' parameter from a POST request is not properly sanitized. Because this user-controllable input is directly used in a system command, an attacker can inject arbitrary commands remotely, leading to unauthorized command execution on the device. [1, 2]
How can this vulnerability impact me? :
This vulnerability can allow an attacker to remotely execute arbitrary commands on the affected Totolink LR350 router. This can compromise the device's confidentiality, integrity, and availability, potentially allowing the attacker to control the device, disrupt network operations, or use the device as a foothold for further attacks. The exploit is publicly available and easy to execute, increasing the risk of exploitation. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection can focus on monitoring POST requests to the /cgi-bin/cstecgi.cgi endpoint, specifically targeting the setDiagnosisCfg function with the 'ip' parameter. Suspicious or malformed 'ip' parameter values that include shell metacharacters or command injection patterns should be flagged. Network intrusion detection systems (NIDS) can be configured to alert on such POST requests. Specific commands are not provided in the resources, but inspecting HTTP POST traffic for unusual 'ip' parameter content is recommended. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected Totolink LR350 router running firmware version 9.3.5u.6369_B20220309, as no known countermeasures or patches are available. As a precaution, restrict access to the device's management interface, monitor for suspicious activity, and consider network segmentation to limit exposure until the device can be replaced. [2]