CVE-2026-9514: OS Command Injection in Totolink CA750-PoE
CVE-2026-9514 is an OS command injection vulnerability in the Totolink CA750-PoE router firmware version 6. 2c. 510. The flaw exists in the setNetworkDiag function of the /cgi-bin/cstecgi. cgi component, where certain input parameters are not properly sanitized, allowing remote attackers to execute arbitrary OS commands. The vulnerability has been publicly disclosed but no official patch or remediation guidance is currently available. The CVSS 4. 0 base score is 5. 3, indicating a medium severity level.
AI Analysis
Technical Summary
This vulnerability affects the Totolink CA750-PoE device running firmware 6.2c.510. The setNetworkDiag function in the /cgi-bin/cstecgi.cgi script improperly handles the NetDiagHost, NetDiagPingNum, NetDiagPingSize, NetDiagPingTimeOut, and NetDiagTracertHop parameters. An attacker can manipulate these parameters to inject OS commands, potentially leading to unauthorized command execution on the device. The vulnerability can be exploited remotely without user interaction and requires low privileges. No official fix or patch has been published by the vendor as of the current information.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary operating system commands on the affected device, potentially compromising device integrity and confidentiality. Given the medium CVSS score and the nature of the vulnerability, attackers could leverage this to disrupt device operation or pivot within the network. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider restricting remote access to the device's management interface to trusted networks only and monitor for unusual activity. Avoid exposing the device's CGI interface to untrusted networks. Follow updates from Totolink for any forthcoming patches or official mitigations.
CVE-2026-9514: OS Command Injection in Totolink CA750-PoE
Description
CVE-2026-9514 is an OS command injection vulnerability in the Totolink CA750-PoE router firmware version 6. 2c. 510. The flaw exists in the setNetworkDiag function of the /cgi-bin/cstecgi. cgi component, where certain input parameters are not properly sanitized, allowing remote attackers to execute arbitrary OS commands. The vulnerability has been publicly disclosed but no official patch or remediation guidance is currently available. The CVSS 4. 0 base score is 5. 3, indicating a medium severity level.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Totolink CA750-PoE device running firmware 6.2c.510. The setNetworkDiag function in the /cgi-bin/cstecgi.cgi script improperly handles the NetDiagHost, NetDiagPingNum, NetDiagPingSize, NetDiagPingTimeOut, and NetDiagTracertHop parameters. An attacker can manipulate these parameters to inject OS commands, potentially leading to unauthorized command execution on the device. The vulnerability can be exploited remotely without user interaction and requires low privileges. No official fix or patch has been published by the vendor as of the current information.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary operating system commands on the affected device, potentially compromising device integrity and confidentiality. Given the medium CVSS score and the nature of the vulnerability, attackers could leverage this to disrupt device operation or pivot within the network. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider restricting remote access to the device's management interface to trusted networks only and monitor for unusual activity. Avoid exposing the device's CGI interface to untrusted networks. Follow updates from Totolink for any forthcoming patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-25T15:08:52.477Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a14d6c7a5ae1af1aaf533b5
Added to database: 5/25/2026, 11:09:59 PM
Last enriched: 5/25/2026, 11:25:03 PM
Last updated: 5/26/2026, 1:35:02 AM
Views: 6
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