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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": "2026-04-13T01:50:35.978662+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update from Totolink that removes or secures the vulnerable cgi endpoint.", "If a firmware upgrade cannot be performed immediately, isolate the router from external networks or block access to the /cgi-bin/cstecgi.cgi path for untrusted IP addresses.", "Disable remote management features or remove the cstecgi.cgi handler if the router allows it, as a temporary protective measure.", "Verify that the mac parameter is properly sanitized and that command injection is no longer possible after remediation."], "summary": {"action": "Immediate Patch", "impact": "Remote OS Command Injection"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the Totolink A7100RU router running firmware 7.4cu.2313_b20191024. Any device running this firmware with the cstecgi.cgi endpoint exposed to the internet is susceptible.", "description_and_impact": "The vulnerable function setAccessDeviceCfg in the CGI handler cstecgi.cgi accepts a mac argument that is directly used in an operating\u2011system command context. Manipulating this parameter allows an attacker to inject arbitrary shell commands, resulting in full remote code execution. This flaw is classified as a high\u2011severity vulnerability and maps to command injection weaknesses.", "risk_and_exploitability": "The vulnerability carries a CVSS score of 9.3, indicating critical severity. The attack vector is remote and an exploit has already been published, increasing the likelihood of real\u2011world exploitation. The EPSS score is not available, and the issue is not listed in the Known Exploited Vulnerabilities catalog, but the public availability of a working exploit warrants urgent attention."}}}}, "created": "2026-04-13T12:38:02.501239+00:00", "updated": "2026-04-13T12:53:49.992928+00:00", "vendors": ["totolink", "totolink$PRODUCT$a7100ru"]}