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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.1cu.643_b20200521"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "A8000RU", "source": "cna", "vendor": "Totolink"}, "product": "a8000ru", "vendor": "totolink"}], "analysis": {"en": {"generated_at": "2026-04-28T19:26:56.588151+00:00", "value": {"mitigation_remediation": ["Update the router firmware to the latest official release that removes the insecure setOpenVpnClientCfg entry.", "If a firmware update is not immediately available, disable the OpenVPN client configuration capability via the router\u2019s web interface or by removing the enabled option from the cstecgi.cgi configuration, and block access to /cgi-bin/cstecgi.cgi using firewall rules.", "Configure the router\u2019s firewall or access\u2011control lists to limit web\u2011interface access to trusted local network IPs only, and consider disabling remote administration until the issue is patched."], "summary": {"action": "Immediate Patch", "impact": "Remote OS Command Execution"}, "threat_synthesis": {"affected_systems": "Affected vendor is Totolink; product is the A8000RU router running version 7.1cu.643_b20200521 of its firmware. Any device using this model and firmware revision is susceptible. Additional hardware models or firmware revisions that do not patch this function are not identified in the current data.", "description_and_impact": "The flaw resides in the setOpenVpnClientCfg function of /cgi-bin/cstecgi.cgi in Totolink A8000RU firmware 7.1cu.643_b20200521. The vulnerability allows an attacker to inject arbitrary operating\u2011system commands via manipulation of the enabled argument. Exploitation results in remote execution of shell commands, effectively compromising the device\u2019s confidentiality, integrity and availability. The weakness is characterized by CWE\u201177 (OS Command Injection) and CWE\u201178 (OS Command Injection).", "risk_and_exploitability": "The CVSS v3 score of 9.3 marks this as Critical. EPSS data is not available; however, the public disclosure and the availability of a functional exploit increase the realistic probability of attack. The KEV catalog does not list this CVE, but the disclosed vulnerability and active exploit code suggest a high risk of real\u2011world exploitation. Attackers can perform the exploit remotely through the router\u2019s web interface without requiring local access."}}}}, "created": "2026-04-28T10:30:28.848269+00:00", "updated": "2026-04-28T19:30:27.387402+00:00", "vendors": ["totolink", "totolink$PRODUCT$a8000ru"]}