{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-6025/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-6025"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["A7100RU"],"_cs_severities":["critical"],"_cs_tags":["cve-2026-6025","rce","command-injection","totolink"],"_cs_type":"advisory","_cs_vendors":["Totolink"],"content_html":"\u003cp\u003eA critical vulnerability, CVE-2026-6025, has been discovered in Totolink A7100RU router firmware version 7.4cu.2313_b20191024. This flaw resides within the CGI handler component, specifically in the \u003ccode\u003esetSyslogCfg\u003c/code\u003e function of the \u003ccode\u003e/cgi-bin/cstecgi.cgi\u003c/code\u003e file. Successful exploitation allows an unauthenticated, remote attacker to inject and execute arbitrary operating system commands on the affected device. The vulnerability is triggered by manipulating the \u003ccode\u003eenable\u003c/code\u003e argument. Given the availability of a public exploit, this poses a significant risk, potentially leading to widespread compromise of vulnerable Totolink routers. Exploitation requires no prior authentication, making it easily exploitable.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a vulnerable Totolink A7100RU router running firmware version 7.4cu.2313_b20191024.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the \u003ccode\u003e/cgi-bin/cstecgi.cgi\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe attacker injects OS commands into the \u003ccode\u003eenable\u003c/code\u003e argument of the \u003ccode\u003esetSyslogCfg\u003c/code\u003e function within the HTTP request.\u003c/li\u003e\n\u003cli\u003eThe router's CGI handler processes the request without proper sanitization of the \u003ccode\u003eenable\u003c/code\u003e argument.\u003c/li\u003e\n\u003cli\u003eThe injected OS commands are executed with the privileges of the web server process.\u003c/li\u003e\n\u003cli\u003eThe attacker gains initial access to the router's operating system.\u003c/li\u003e\n\u003cli\u003eThe attacker may then escalate privileges, install persistent backdoors, or pivot to internal network resources.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves full control of the compromised router, potentially using it for botnet activities, data exfiltration, or denial-of-service attacks.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-6025 grants the attacker complete control over the compromised Totolink A7100RU router. This can lead to a variety of malicious activities, including botnet recruitment, data theft, and network disruption. Given the potential for widespread exploitation due to the public availability of an exploit, a large number of devices could be compromised, impacting both home and small business networks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImplement a web application firewall (WAF) rule to filter requests to \u003ccode\u003e/cgi-bin/cstecgi.cgi\u003c/code\u003e containing suspicious characters or command injection attempts in the \u003ccode\u003eenable\u003c/code\u003e parameter, based on analysis of exploit techniques.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for unusual POST requests to \u003ccode\u003e/cgi-bin/cstecgi.cgi\u003c/code\u003e with abnormally long or encoded \u003ccode\u003eenable\u003c/code\u003e parameters to detect exploit attempts (see example rule below).\u003c/li\u003e\n\u003cli\u003eApply any available firmware updates from Totolink to patch CVE-2026-6025 on affected A7100RU routers, once released by the vendor.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-totolink-rce/","summary":"CVE-2026-6025 allows a remote attacker to inject OS commands into a Totolink A7100RU router by manipulating the 'enable' argument of the setSyslogCfg function within the /cgi-bin/cstecgi.cgi CGI handler, potentially leading to complete system compromise.","title":"Totolink A7100RU OS Command Injection Vulnerability (CVE-2026-6025)","url":"https://feed.craftedsignal.io/briefs/2024-01-totolink-rce/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-6025","version":"https://jsonfeed.org/version/1.1"}