CVE-2026-7548 Details
Description
A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. This affects the function sub_41A68C of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument setUssd results in command injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.
A command injection vulnerability has been identified in the Totolink NR1800X router, specifically in the firmware version 9.1.0u.6279_B20210910. The issue arises in the CGI script 'cstecgi.cgi', within the 'setUssd' function. The vulnerability allows remote attackers to inject arbitrary commands by manipulating the 'ussd' parameter, which is then executed by the system command interpreter.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 1, 2026CISA-ADP
Assessed May 1, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/newym/cve/blob/main/totolink%20nr1800x%20command%20injection.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/submit/804417 | [email protected] | Permission Required |
| https://vuldb.com/vuln/360358 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/360358/cti | [email protected] | AdvisoryPermission Required |
| https://www.totolink.net/ | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Totolink NR1800X | 9.1.0u.6279_B20210910 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | New CVE Received | [email protected] |