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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.4cu.2313_b20191024"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "A7100RU", "source": "cna", "vendor": "Totolink"}, "product": "a7100ru", "vendor": "totolink"}], "analysis": {"en": {"generated_at": "2026-04-10T07:20:24.948251+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update from Totolink that addresses the command injection in cstecgi.cgi.", "If a patch is not yet released, block external access to the /cgi-bin/cstecgi.cgi endpoint using a firewall or ACL.", "Segment the network so that the router is isolated from critical internal hosts.", "Enable logging and monitor for suspicious CGI activity.", "Check the Totolink website or vendor support for additional advisory information."], "summary": {"action": "Immediate Patch", "impact": "Remote Command Execution"}, "threat_synthesis": {"affected_systems": "The flaw exists in Totolink A7100RU routers running firmware version 7.4cu.2313_b20191024. Only this specific build is affected; other firmware revisions are not impacted.", "description_and_impact": "The vulnerability is an OS command injection in the setUrlFilterRules function of the /cgi-bin/cstecgi.cgi CGI handler. By manipulating the enable argument, an unauthenticated attacker can execute arbitrary shell commands on the device. This gives the attacker full control of the router, enabling compromise of confidentiality, integrity, and availability of the surrounding network.", "risk_and_exploitability": "The CVSS base score of 9.3 indicates critical severity, and the lack of mitigation in the public domain means attackers could exploit the flaw remotely without authentication. The exploit is publicly available, suggesting a high likelihood of real-world attacks. The vulnerability is not listed in the CISA KEV catalog, but the remote nature and high impact still warrant urgent remediation."}}}}, "created": "2026-04-10T08:35:34.169797+00:00", "updated": "2026-04-10T09:26:35.532106+00:00", "vendors": ["totolink", "totolink$PRODUCT$a7100ru"]}