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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": "2026-04-12T06:22:22.063442+00:00", "value": {"mitigation_remediation": ["Contact Totolink to obtain an official firmware update that addresses the command injection issue.", "If no patch is immediately available, block external access to the /cgi-bin/cstecgi.cgi endpoint or limit it to trusted internal networks.", "Configure network segmentation and apply firewall rules to restrict management traffic to authorized devices.", "Enable logging of CGI requests and monitor logs for anomalous command execution patterns or repeated access attempts."], "summary": {"action": "Immediate Patch", "impact": "Operating System Command Injection"}, "threat_synthesis": {"affected_systems": "Only Totolink A7100RU routers with firmware 7.4cu.2313_b20191024 are listed as impacted. No other vendors or product lines appear to be affected by this flaw.", "description_and_impact": "The vulnerability resides in the setTtyServiceCfg function of the /cgi-bin/cstecgi.cgi CGI handler on the router. By manipulating the ttyEnable argument, an attacker can inject arbitrary operating system commands, enabling execution of code outside the normal application context. This level of control allows complete compromise of the device\u2019s confidentiality, integrity, and availability.", "risk_and_exploitability": "With a CVSS score of 9.3 the issue is classified as Critical. EPSS information is not provided, but the exploit has been publicly disclosed and can be triggered remotely via the CGI endpoint. The vulnerability is not currently listed in CISA\u2019s KEV catalog; nevertheless the combination of high severity and public exploitation make it a high\u2011risk threat."}}}}, "created": "2026-04-13T12:41:40.204001+00:00", "updated": "2026-04-13T12:56:21.774558+00:00", "vendors": ["totolink", "totolink$PRODUCT$a7100ru"]}