{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-5526/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-5526"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["cve-2026-5526","tenda","router","access-control"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA security vulnerability, identified as CVE-2026-5526, affects the Tenda 4G03 Pro router, specifically versions up to 1.0/1.1/04.03.01.53/192.168.0.1. The flaw resides within an unspecified function of the \u003ccode\u003e/bin/httpd\u003c/code\u003e file, leading to improper access controls. A remote attacker could exploit this vulnerability, potentially gaining unauthorized access to the device. Publicly available exploits exist, increasing the risk of exploitation. This issue was reported on April 4, 2026, and poses a significant threat due to the ease of remote exploitation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a Tenda 4G03 Pro router with a publicly accessible web interface.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the \u003ccode\u003e/bin/httpd\u003c/code\u003e file.\u003c/li\u003e\n\u003cli\u003eThe malicious request exploits the improper access control vulnerability (CVE-2026-5526).\u003c/li\u003e\n\u003cli\u003eThe router\u0026rsquo;s \u003ccode\u003e/bin/httpd\u003c/code\u003e process improperly handles the request, bypassing access controls.\u003c/li\u003e\n\u003cli\u003eThe attacker gains unauthorized access to sensitive functionalities of the router.\u003c/li\u003e\n\u003cli\u003eThe attacker modifies router configurations, such as DNS settings or firewall rules.\u003c/li\u003e\n\u003cli\u003eThe attacker could potentially use the compromised router as a pivot point 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-2026-5526 could allow attackers to remotely compromise Tenda 4G03 Pro routers. This can lead to unauthorized access to the device\u0026rsquo;s configuration, modification of settings, or use of the router as a stepping stone for further attacks within the network. Given the availability of public exploits, unpatched devices are at significant risk. While the exact number of affected devices is unknown, the widespread use of Tenda routers makes this a potentially significant issue.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor web server logs for suspicious requests targeting \u003ccode\u003e/bin/httpd\u003c/code\u003e using the provided Sigma rule.\u003c/li\u003e\n\u003cli\u003eApply available firmware updates or patches from Tenda to address CVE-2026-5526 as soon as they are released.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation to limit the impact of a compromised router.\u003c/li\u003e\n\u003cli\u003eEnforce strong password policies for router administration to prevent unauthorized access.\u003c/li\u003e\n\u003cli\u003eReview and update firewall rules to restrict access to the router\u0026rsquo;s web interface from untrusted networks.\u003c/li\u003e\n\u003cli\u003eDeploy the provided Sigma rule to detect suspicious process execution originating from the web server process.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-04T23:16:44Z","date_published":"2026-04-04T23:16:44Z","id":"/briefs/2026-04-tenda-4g03-pro-access-control/","summary":"CVE-2026-5526 describes an improper access control vulnerability in the Tenda 4G03 Pro router's /bin/httpd file, allowing remote attackers to potentially gain unauthorized access.","title":"Tenda 4G03 Pro Improper Access Control Vulnerability (CVE-2026-5526)","url":"https://feed.craftedsignal.io/briefs/2026-04-tenda-4g03-pro-access-control/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-5526","version":"https://jsonfeed.org/version/1.1"}