{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-4611/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["totolink","rce","command-injection","cve-2026-4611"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA critical vulnerability, CVE-2026-4611, affects TOTOLINK X6000R routers running firmware versions 9.4.0cu.1360_B20241207 and 9.4.0cu.1498_B20250826. This vulnerability allows a remote attacker to inject operating system commands by manipulating the Hostname argument passed to the \u003ccode\u003esetLanCfg\u003c/code\u003e function within the \u003ccode\u003e/usr/sbin/shttpd\u003c/code\u003e binary. Successful exploitation grants the attacker the ability to execute arbitrary commands with elevated privileges on the router. Given the widespread deployment of these routers in home and small office networks, this vulnerability poses a significant risk of compromise, potentially leading to data theft, botnet recruitment, or denial-of-service attacks. The vulnerability was reported on March 23, 2026.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable TOTOLINK X6000R router running firmware version 9.4.0cu.1360_B20241207 or 9.4.0cu.1498_B20250826.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the \u003ccode\u003e/usr/sbin/shttpd\u003c/code\u003e web server.\u003c/li\u003e\n\u003cli\u003eThe malicious request includes a modified \u003ccode\u003eHostname\u003c/code\u003e argument within the \u003ccode\u003esetLanCfg\u003c/code\u003e function call.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eHostname\u003c/code\u003e argument contains OS command injection payloads such as backticks, semicolons, or command chaining operators (e.g., \u003ccode\u003e\u0026amp;\u0026amp;\u003c/code\u003e, \u003ccode\u003e||\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eshttpd\u003c/code\u003e process, running with elevated privileges, processes the malicious \u003ccode\u003eHostname\u003c/code\u003e argument without proper sanitization.\u003c/li\u003e\n\u003cli\u003eThe injected OS commands are executed by the system shell, leading to arbitrary code execution.\u003c/li\u003e\n\u003cli\u003eThe attacker gains control of the router\u0026rsquo;s operating system.\u003c/li\u003e\n\u003cli\u003eThe attacker can then perform a variety of malicious actions, such as exfiltrating sensitive data, modifying router configurations, or using the router as a foothold for further network attacks.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-4611 allows attackers to execute arbitrary commands on vulnerable TOTOLINK X6000R routers. This could lead to a complete compromise of the device, allowing attackers to steal sensitive information such as Wi-Fi passwords, intercept network traffic, or use the router as a launching point for attacks against other devices on the network. Given the potential for widespread exploitation, a large number of home and small business networks could be affected, resulting in significant financial and reputational damage.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor web server logs (category: \u003ccode\u003ewebserver\u003c/code\u003e, product: \u003ccode\u003elinux\u003c/code\u003e) for requests containing suspicious characters or command injection attempts within the \u003ccode\u003eHostname\u003c/code\u003e argument when accessing the \u003ccode\u003e/usr/sbin/shttpd\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eImplement the provided Sigma rule to detect exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eContact TOTOLINK for a security patch or upgrade guidance.\u003c/li\u003e\n\u003cli\u003eConsider implementing network segmentation to limit the impact of a compromised router.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-03-24T12:00:00Z","date_published":"2026-03-24T12:00:00Z","id":"/briefs/2026-03-totolink-rce/","summary":"A remote command injection vulnerability exists in TOTOLINK X6000R routers, specifically versions 9.4.0cu.1360_B20241207 and 9.4.0cu.1498_B20250826, allowing attackers to execute arbitrary commands via manipulation of the Hostname argument in the setLanCfg function.","title":"TOTOLINK X6000R Remote Command Injection Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-03-totolink-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-4611","version":"https://jsonfeed.org/version/1.1"}