CVE-2026-91853— TOTOLINK X5000R Export Ovpn cstecgi.cgi exportOvpn os command injection
Quick assessment
Affected
TOTOLINK X5000R
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 TOTOLINK X5000R 固件版本 9.1.0cu.2089_B20211224 中发现一个安全漏洞。受影响的组件是“Export Ovpn Handler”，具体位于文件 中的 函数。通过操纵参数 ，攻击者可实施操作系统命令注入（OS Command Injection）。该漏洞可被远程利用，且相关利用代码已公开披露，可能被恶意利用。
Possible ATT&CK Techniques 1 AI
T1059.004 · Unix Shell
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I. Basic Information for CVE-2026-91853
Vulnerability Information
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Vulnerability Title
TOTOLINK X5000R Export Ovpn cstecgi.cgi exportOvpn os command injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-91853
| # | POC Description | Source Link | Shenlong Link |
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Proof of Concept for CVE-2026-91853 (1)
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V. Comments for CVE-2026-91853
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