CVE-2026-5678 Totolink CVE debrief

Who should care

Users of Totolink A7100RU 7.4cu.2313_b20191024 should assess the vulnerability and apply patches or mitigations as available. This includes reviewing the vulnerability details, assessing exposure, and implementing compensating controls if necessary.

Technical summary

The vulnerability exists in the setScheduleCfg function of /cgi-bin/cstecgi.cgi in Totolink A7100RU 7.4cu.2313_b20191024. An attacker can inject os commands by manipulating the mode argument. The attack can be launched remotely. The CVSS score of 5.5 indicates a medium severity vulnerability. Users should assess the vulnerability and apply patches or mitigations as available. This includes reviewing the vulnerability details, assessing exposure, and implementing compensating controls if necessary. Further verification is recommended to confirm the affected scope and severity based on the provided source corpus, which may have limitations.

Defensive priority

Medium priority due to the CVSS score of 5.5 and the potential for remote exploitation.

Recommended defensive actions

• Inventory affected systems and assess exposure
• Apply vendor patches or updates if available
• Implement compensating controls such as network segmentation or access restrictions
• Monitor for suspicious activity related to the affected function
• Review relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-04-06T19:16:30.883Z and was last modified on 2026-07-24T09:10:00.153Z. The NVD entry is currently Deferred. The vulnerability details are based on the provided source corpus, which may have limitations. Further verification is recommended to confirm the affected scope and severity.

Official resources