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PatchSiren cyber security CVE debrief

CVE-2026-5678 Totolink CVE debrief

A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. The affected element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument mode can lead to os command injection. The attack may be launched remotely. This vulnerability has a CVSS score of 5.5 and is classified as MEDIUM severity. Users should assess the vulnerability and apply patches or mitigations as available.

Vendor
Totolink
Product
A7100RU
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-06
Original CVE updated
2026-07-24
Advisory published
2026-04-06
Advisory updated
2026-07-24

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-5678 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-5678

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-5678 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-5678

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.