CVE-2026-9515: OS Command Injection in Totolink CA750-PoE
CVE-2026-9515 is an OS command injection vulnerability in the Totolink CA750-PoE router firmware version 6. 2c. 510. The flaw exists in the setUnloadUserData function within the /cgi-bin/cstecgi. cgi component, where manipulation of the plugin_version argument allows remote attackers to inject OS commands. The vulnerability has a medium severity rating with a CVSS score of 5. 3. Exploit code is publicly available, but no known exploits in the wild have been reported. No official patch or remediation guidance has been provided by the vendor at this time.
AI Analysis
Technical Summary
This vulnerability affects Totolink CA750-PoE version 6.2c.510. It arises from improper input validation in the setUnloadUserData function of the /cgi-bin/cstecgi.cgi script, specifically through the plugin_version parameter. An attacker can remotely supply crafted input to execute arbitrary OS commands on the device. The vulnerability is remotely exploitable without user interaction and requires low attack complexity and privileges. The CVSS 4.0 vector indicates partial impacts on confidentiality, integrity, and availability, but no scope change or security controls bypass. No official remediation or patch information is currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary operating system commands on the affected device, potentially leading to unauthorized control or disruption of the device. The impact affects confidentiality, integrity, and availability to a limited extent as indicated by the CVSS vector. However, no reports confirm active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting remote access to the device's management interface and monitor for unusual activity. Avoid exposing the device management interface to untrusted networks. Follow vendor channels for updates on patches or official mitigations.
CVE-2026-9515: OS Command Injection in Totolink CA750-PoE
Description
CVE-2026-9515 is an OS command injection vulnerability in the Totolink CA750-PoE router firmware version 6. 2c. 510. The flaw exists in the setUnloadUserData function within the /cgi-bin/cstecgi. cgi component, where manipulation of the plugin_version argument allows remote attackers to inject OS commands. The vulnerability has a medium severity rating with a CVSS score of 5. 3. Exploit code is publicly available, but no known exploits in the wild have been reported. No official patch or remediation guidance has been provided by the vendor at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Totolink CA750-PoE version 6.2c.510. It arises from improper input validation in the setUnloadUserData function of the /cgi-bin/cstecgi.cgi script, specifically through the plugin_version parameter. An attacker can remotely supply crafted input to execute arbitrary OS commands on the device. The vulnerability is remotely exploitable without user interaction and requires low attack complexity and privileges. The CVSS 4.0 vector indicates partial impacts on confidentiality, integrity, and availability, but no scope change or security controls bypass. No official remediation or patch information is currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary operating system commands on the affected device, potentially leading to unauthorized control or disruption of the device. The impact affects confidentiality, integrity, and availability to a limited extent as indicated by the CVSS vector. However, no reports confirm active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting remote access to the device's management interface and monitor for unusual activity. Avoid exposing the device management interface to untrusted networks. Follow vendor channels for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-25T15:08:56.070Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a14da4ba5ae1af1aaf62b54
Added to database: 5/25/2026, 11:24:59 PM
Last enriched: 5/25/2026, 11:39:53 PM
Last updated: 5/26/2026, 2:49:09 AM
Views: 6
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