CVE-2026-91853 Details
Description
A vulnerability has been found in TOTOLINK X5000R 9.1.0cu.2089_B20211224. The impacted element is the function exportOvpn of the file /cgi-bin/cstecgi.cgi?action=exportOvpn&type=user of the component Export Ovpn Handler. The manipulation of the argument filetype leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
A command injection vulnerability has been identified in the TOTOLINK X5000R router running firmware version 9.1.0cu.2089_B20211224. The issue resides in the OpenVPN export handler within the CGI component, specifically the 'exportOvpn' function. The vulnerability allows remote attackers to inject and execute arbitrary operating system commands by manipulating the 'filetype' parameter in the exportOvpn action.
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 Sep 15, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/awigwu76/TOTOLINK_X5000R/blob/main/2.md | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-91853 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/933810 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/404082 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/404082/cti | [email protected] | Content Wall |
| https://www.totolink.net/ | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| TOTOLINK X5000R | v9.1.0cu.2089_B20211224 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 15, 2026 | New CVE Received | [email protected] |