{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-7241/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-7241"}],"_cs_exploited":false,"_cs_products":["A8000RU"],"_cs_severities":["critical"],"_cs_tags":["cve-2026-7241","command-injection","router"],"_cs_type":"advisory","_cs_vendors":["Totolink"],"content_html":"\u003cp\u003eA critical vulnerability, CVE-2026-7241, has been identified in Totolink A8000RU router firmware version 7.1cu.643_b20200521. This vulnerability resides within the CGI Handler component, specifically in the \u003ccode\u003esetWiFiBasicCfg\u003c/code\u003e function of the \u003ccode\u003e/cgi-bin/cstecgi.cgi\u003c/code\u003e file. Successful exploitation allows a remote attacker to inject and execute arbitrary operating system commands by manipulating the \u003ccode\u003ewifiOff\u003c/code\u003e argument. The vulnerability has been publicly disclosed, increasing the risk of exploitation. This poses a significant threat to users of the affected router model, potentially leading to complete system compromise.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a Totolink A8000RU router running firmware version 7.1cu.643_b20200521.\u003c/li\u003e\n\u003cli\u003eThe attacker sends a crafted HTTP request to the \u003ccode\u003e/cgi-bin/cstecgi.cgi\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe HTTP request targets the \u003ccode\u003esetWiFiBasicCfg\u003c/code\u003e function.\u003c/li\u003e\n\u003cli\u003eThe attacker injects malicious OS commands into the \u003ccode\u003ewifiOff\u003c/code\u003e argument of the HTTP request.\u003c/li\u003e\n\u003cli\u003eThe CGI handler processes the request without proper sanitization of the \u003ccode\u003ewifiOff\u003c/code\u003e argument.\u003c/li\u003e\n\u003cli\u003eThe injected OS commands are executed by the system with the privileges of the web server.\u003c/li\u003e\n\u003cli\u003eThe attacker gains remote shell access or performs other malicious actions, such as modifying router settings.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows a remote attacker to execute arbitrary operating system commands on the affected Totolink A8000RU router. This can lead to complete compromise of the device, potentially enabling the attacker to eavesdrop on network traffic, modify router configuration, or use the router as a node in a botnet. Given the widespread use of Totolink routers, a successful attack could impact numerous home and small business networks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect Totolink A8000RU Command Injection Attempt\u0026rdquo; to your SIEM to identify exploitation attempts targeting the vulnerable endpoint.\u003c/li\u003e\n\u003cli\u003eApply the Sigma rule \u0026ldquo;Detect Suspicious CGI Request Arguments\u0026rdquo; to identify unusual commands in cgi requests.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for requests to \u003ccode\u003e/cgi-bin/cstecgi.cgi\u003c/code\u003e with suspicious characters or commands in the \u003ccode\u003ewifiOff\u003c/code\u003e parameter, as this is the attack vector described in CVE-2026-7241.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-28T09:17:41Z","date_published":"2026-04-28T09:17:41Z","id":"/briefs/2026-04-totolink-rce/","summary":"Totolink A8000RU version 7.1cu.643_b20200521 is vulnerable to OS command injection via manipulation of the `wifiOff` argument in the `setWiFiBasicCfg` function of the `/cgi-bin/cstecgi.cgi` CGI handler, allowing a remote attacker to execute arbitrary commands on the system.","title":"Totolink A8000RU OS Command Injection Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-04-totolink-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-7241","version":"https://jsonfeed.org/version/1.1"}