CVE-2026-1326
BaseFortify
Publication date: 2026-01-22
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 | nr1800x_firmware | 9.1.0u.6279_b20210910 |
| totolink | nr1800x | * |
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?
CVE-2026-1326 is a command injection vulnerability in the Totolink NR1800X router firmware version 9.1.0u.6279_B20210910. It occurs in the setWanCfg function of the /cgi-bin/cstecgi.cgi POST request handler. The vulnerability arises because the Hostname parameter from the POST request is not properly sanitized and is passed directly to a system command function, allowing an attacker to inject and execute arbitrary commands on the device remotely. [1, 2]
How can this vulnerability impact me? :
This vulnerability can allow an attacker to remotely execute arbitrary commands on the affected Totolink NR1800X router, potentially compromising the device's confidentiality, integrity, and availability. Since exploitation requires no authentication and a public exploit exists, attackers can take control of the device, disrupt network operations, or use the device as a foothold for further attacks. [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 looking for suspicious or malformed Hostname parameters that may indicate command injection attempts. Network intrusion detection systems (NIDS) can be configured to alert on unusual POST requests to this endpoint. Additionally, inspecting router logs for unexpected commands or behavior may help. However, no specific detection commands are provided in the available resources. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected Totolink NR1800X router firmware version 9.1.0u.6279_B20210910 with an alternative product, as no known countermeasures or patches currently exist. Limiting remote access to the device and monitoring for suspicious activity may also help reduce risk until replacement is possible. [2]