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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": "2026-04-10T02:25:02.058900+00:00", "value": {"mitigation_remediation": ["Update the router firmware to a version that fixes the OS command injection vulnerability, using the latest release from Totolink's support site.", "If a firmware update is unavailable, disable the remote Telnet service by setting telnet_enabled to 0 in the router\u2019s configuration.", "Restrict external access to the router\u2019s CGI interface by placing it behind a firewall or disabling management over public networks.", "Monitor the device for anomalous outbound traffic or execution of unexpected commands, and investigate any suspicious activity promptly."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The flaw affects the Totolink A7100RU router running firmware version 7.4cu.2313_b20191024. No other firmware revisions are listed in the CNA data; systems running this specific build are therefore at risk.", "description_and_impact": "The vulnerability resides in the setTelnetCfg function of the cstecgi.cgi script on Totolink A7100RU routers. An attacker can manipulate the telnet_enabled parameter to inject arbitrary OS commands. Successful exploitation gives full control over the device\u2019s operating system, allowing data theft, device takeover, or further network compromise.", "risk_and_exploitability": "With a CVSS score of 9.3 the vulnerability is high severity. The EPSS score is not available, but the publicly released exploit and absence from the KEV catalog do not mitigate its danger. The attack vector is remote, using crafted HTTP requests to the CGI handler; no special privileges are required, and any host able to reach the router\u2019s management interface can exploit the flaw."}}}}, "created": "2026-04-10T08:36:19.826827+00:00", "updated": "2026-04-10T09:27:19.621559+00:00", "vendors": ["totolink", "totolink$PRODUCT$a7100ru"]}