CVE-2026-5105: Command Injection in Totolink A3300R
CVE-2026-5105 is a medium severity command injection vulnerability in the Totolink A3300R router firmware version 17. 0. 0cu. 557_b20221024. The flaw exists in the setVpnPassCfg function within the /cgi-bin/cstecgi. cgi component, where manipulation of the pptpPassThru argument allows remote attackers to execute arbitrary commands. The vulnerability can be exploited remotely without user interaction. Although the exploit code is publicly available, there is no confirmed evidence of exploitation in the wild. No official patch or remediation guidance has been provided yet.
AI Analysis
Technical Summary
This vulnerability affects the Totolink A3300R router running firmware version 17.0.0cu.557_b20221024. The issue is a command injection in the setVpnPassCfg function of the /cgi-bin/cstecgi.cgi file, specifically triggered by manipulating the pptpPassThru parameter. An attacker can remotely execute arbitrary commands on the device without requiring privileges or user interaction. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity. The exploit is publicly available, but no vendor patch or official fix has been disclosed.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary commands on the affected device, potentially leading to unauthorized control or disruption of the router. This can compromise the confidentiality, integrity, and availability of the device and the network it serves. However, there is no current evidence of 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 disable vulnerable features if possible. Monitor vendor channels for updates and apply patches promptly once available.
CVE-2026-5105: Command Injection in Totolink A3300R
Description
CVE-2026-5105 is a medium severity command injection vulnerability in the Totolink A3300R router firmware version 17. 0. 0cu. 557_b20221024. The flaw exists in the setVpnPassCfg function within the /cgi-bin/cstecgi. cgi component, where manipulation of the pptpPassThru argument allows remote attackers to execute arbitrary commands. The vulnerability can be exploited remotely without user interaction. Although the exploit code is publicly available, there is no confirmed evidence of exploitation in the wild. No official patch or remediation guidance has been provided yet.
CVSS v4.0
Score 5.3medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Totolink A3300R router running firmware version 17.0.0cu.557_b20221024. The issue is a command injection in the setVpnPassCfg function of the /cgi-bin/cstecgi.cgi file, specifically triggered by manipulating the pptpPassThru parameter. An attacker can remotely execute arbitrary commands on the device without requiring privileges or user interaction. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity. The exploit is publicly available, but no vendor patch or official fix has been disclosed.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary commands on the affected device, potentially leading to unauthorized control or disruption of the router. This can compromise the confidentiality, integrity, and availability of the device and the network it serves. However, there is no current evidence of 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 disable vulnerable features if possible. Monitor vendor channels for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-03-29T17:50:56.050Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69c9f3ace6bfc5ba1da3b131
Added to database: 3/30/2026, 3:53:16 AM
Last enriched: 4/6/2026, 10:54:47 AM
Last updated: 6/9/2026, 7:41:20 PM
Views: 142
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