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Vulnerability record · CVE-2025-13184 · published 10 December 2025

CVE-2025-13184: Totolink x5000r firmware incorrect authorization vulnerability

TTotolink · X5000r Firmware

Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank password on factory/reset X5000R V9.1.0u.6369_B20230113 (arbitrary command execution). Earlier versions that share the same implementation, may also be affected.

9.8 CVSS 3.1 Critical EPSS 11% · top 4.2% CWE-863 · Incorrect authorization
9.8CVSS 3.1 base score
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
25 Sep 2026Last modified by NVD

Description

Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank password on factory/reset X5000R V9.1.0u.6369_B20230113 (arbitrary command execution). Earlier versions that share the same implementation, may also be affected.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://hackingbydoing.wixsite.com/hackingbydoing/post/totolink-x5000r-ax1800-router-authentication-bypass ExploitThird Party Advisory
https://www.kb.cert.org/vuls/id/821724 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-70327Totolink x5000r firmware argument injection vulnerabilityTOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of the /usr/sbin/lighttpd executa…EPSS 0.72%9.8CVE-2024-32353Totolink x5000r firmware command injection vulnerabilityTOTOLINK X5000R V9.1.0cu.2350_B20230313 was discovered to contain a command injection vulnerability via the 'port' parameter in the setSSServer funct…EPSS 2.1%9.8CVE-2024-28639Totolink x5000r firmware classic buffer overflow vulnerabilityBuffer Overflow vulnerability in TOTOLink X5000R V9.1.0u.6118-B20201102 and A7000R V9.1.0u.6115-B20201022, allow remote attackers to execute arbitrar…EPSS 1.2%9.8CVE-2023-6612Totolink x5000r firmware os command injection vulnerabilityA vulnerability was found in Totolink X5000R 9.1.0cu.2300_B20230112. It has been rated as critical. This issue affects the function setDdnsCfg/setDyn…EPSS 31%9.8CVE-2023-45984Totolink x5000r firmware out-of-bounds write vulnerabilityTOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the lang parameter i…EPSS 0.70%9.8CVE-2023-36950Totolink x5000r firmware out-of-bounds write vulnerabilityTOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the http_host parame…EPSS 0.82%9.8CVE-2023-36947Totolink x5000r firmware out-of-bounds write vulnerabilityTOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the File parameter i…EPSS 0.82%9.8CVE-2023-39617Totolink x5000r firmware command injection vulnerabilityTOTOLINK X5000R_V9.1.0cu.2089_B20211224 and X5000R_V9.1.0cu.2350_B20230313 were discovered to contain a remote code execution (RCE) vulnerability via…EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2025-13184), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.