CVE-2026-5679: OS Command Injection in Totolink A3300R
CVE-2026-5679 is a medium severity OS command injection vulnerability in the Totolink A3300R router firmware version 17. 0. 0cu. 557_B20221024. The issue exists in the vsetTr069Cfg function of the /cgi-bin/cstecgi. cgi file, where manipulation of the stun_pass argument can lead to command injection. This vulnerability has been publicly disclosed but no known exploits in the wild have been reported. No official patch or remediation guidance is currently available from the vendor.
AI Analysis
Technical Summary
This vulnerability affects the Totolink A3300R router firmware version 17.0.0cu.557_B20221024. The flaw is located in the vsetTr069Cfg function within the /cgi-bin/cstecgi.cgi CGI script, where improper handling of the stun_pass parameter allows an attacker with low privileges to inject OS commands. The vulnerability has been publicly disclosed, indicating that exploit code or proof-of-concept details are available. The CVSS 4.0 base score is 5.1, reflecting a medium severity with attack vector being adjacent network and requiring low complexity and low privileges.
Potential Impact
Successful exploitation could allow an attacker with adjacent network access and low privileges to execute arbitrary OS commands on the affected device. This could lead to unauthorized control or disruption of the router's operation. However, there are no reports of active exploitation 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 released, users should limit access to the device's management interface to trusted networks and monitor for unusual activity related to the vulnerable function. No official patch or workaround has been provided by the vendor as of now.
CVE-2026-5679: OS Command Injection in Totolink A3300R
Description
CVE-2026-5679 is a medium severity OS command injection vulnerability in the Totolink A3300R router firmware version 17. 0. 0cu. 557_B20221024. The issue exists in the vsetTr069Cfg function of the /cgi-bin/cstecgi. cgi file, where manipulation of the stun_pass argument can lead to command injection. This vulnerability has been publicly disclosed but no known exploits in the wild have been reported. No official patch or remediation guidance is currently available from the vendor.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Totolink A3300R router firmware version 17.0.0cu.557_B20221024. The flaw is located in the vsetTr069Cfg function within the /cgi-bin/cstecgi.cgi CGI script, where improper handling of the stun_pass parameter allows an attacker with low privileges to inject OS commands. The vulnerability has been publicly disclosed, indicating that exploit code or proof-of-concept details are available. The CVSS 4.0 base score is 5.1, reflecting a medium severity with attack vector being adjacent network and requiring low complexity and low privileges.
Potential Impact
Successful exploitation could allow an attacker with adjacent network access and low privileges to execute arbitrary OS commands on the affected device. This could lead to unauthorized control or disruption of the router's operation. However, there are no reports of active exploitation 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 released, users should limit access to the device's management interface to trusted networks and monitor for unusual activity related to the vulnerable function. No official patch or workaround has been provided by the vendor as of now.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-06T09:45:14.836Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d409da0a160ebd92d5a9d1
Added to database: 4/6/2026, 7:30:34 PM
Last enriched: 4/6/2026, 7:46:24 PM
Last updated: 4/7/2026, 2:42:30 AM
Views: 7
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