{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-6483/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.2,"id":"CVE-2026-6483"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["command-injection","router","cve-2026-6483"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA critical OS command injection vulnerability, tracked as CVE-2026-6483, has been identified in Wavlink WL-WN530H4 routers running firmware version 20220721. The flaw resides within the \u003ccode\u003e/cgi-bin/internet.cgi\u003c/code\u003e file, specifically affecting the \u003ccode\u003estrcat/snprintf\u003c/code\u003e function. Successful exploitation enables remote attackers to execute arbitrary OS commands on the affected device.  The vulnerability is triggered by manipulating input to the vulnerable function. A public exploit is available, increasing the risk of widespread exploitation. Users are advised to upgrade to version 2026.04.16 to mitigate the risk. This vulnerability poses a significant threat due to the potential for complete system compromise, potentially leading to data exfiltration, device hijacking, or denial-of-service attacks.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a Wavlink WL-WN530H4 router running firmware version 20220721.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the \u003ccode\u003e/cgi-bin/internet.cgi\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe crafted request includes a payload designed to exploit the \u003ccode\u003estrcat/snprintf\u003c/code\u003e function.\u003c/li\u003e\n\u003cli\u003eThe vulnerable \u003ccode\u003estrcat/snprintf\u003c/code\u003e function fails to properly sanitize the attacker-controlled input.\u003c/li\u003e\n\u003cli\u003eThe unsanitized input is passed to a system call, resulting in OS command injection.\u003c/li\u003e\n\u003cli\u003eThe attacker executes arbitrary OS commands with the privileges of the web server process.\u003c/li\u003e\n\u003cli\u003eThe attacker can leverage the compromised system to perform actions such as modifying router configuration, installing malware, or pivoting to other network devices.\u003c/li\u003e\n\u003cli\u003eThe attacker gains persistent access and control over the router.\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 OS commands on the affected Wavlink router. This can lead to a complete compromise of the device, allowing the attacker to modify router settings, intercept network traffic, or use the router as a launchpad for further attacks within the network. The lack of specifics regarding victimology suggests a wide potential impact affecting numerous users and potentially small businesses relying on these routers.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade the Wavlink WL-WN530H4 router to firmware version 2026.04.16 to patch CVE-2026-6483.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect Wavlink Command Injection Attempt\u0026rdquo; to monitor for malicious requests targeting \u003ccode\u003e/cgi-bin/internet.cgi\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity and unauthorized access attempts following exploitation of CVE-2026-6483.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-17T11:16:11Z","date_published":"2026-04-17T11:16:11Z","id":"/briefs/2026-04-wavlink-command-injection/","summary":"A remote command injection vulnerability exists in the Wavlink WL-WN530H4 router, specifically in the `strcat/snprintf` function of the `/cgi-bin/internet.cgi` file, allowing attackers to execute arbitrary OS commands.","title":"Wavlink WL-WN530H4 OS Command Injection Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-04-wavlink-command-injection/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-6483","version":"https://jsonfeed.org/version/1.1"}