{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-9481/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-9481"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["EW-7438RPn 1.31"],"_cs_severities":["critical"],"_cs_tags":["cve","cve-2026-9481","buffer overflow","edimax","stack overflow"],"_cs_type":"threat","_cs_vendors":["Edimax"],"content_html":"\u003cp\u003eA critical stack-based buffer overflow vulnerability, identified as CVE-2026-9481, has been discovered in Edimax EW-7438RPn version 1.31. This vulnerability resides within the \u003ccode\u003eformStats\u003c/code\u003e function located in the \u003ccode\u003e/goform/formStats\u003c/code\u003e file. The vulnerability stems from improper input validation of the \u003ccode\u003esubmit-url\u003c/code\u003e argument, allowing a remote attacker to potentially overwrite parts of the stack. Publicly available exploit code exists, increasing the risk of widespread exploitation. The vendor was notified but did not respond, increasing the urgency for users to apply mitigations.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker sends a specially crafted HTTP request to the Edimax EW-7438RPn device.\u003c/li\u003e\n\u003cli\u003eThe HTTP request targets the \u003ccode\u003e/goform/formStats\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe request includes the \u003ccode\u003esubmit-url\u003c/code\u003e argument with a value exceeding the expected buffer size.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eformStats\u003c/code\u003e function processes the \u003ccode\u003esubmit-url\u003c/code\u003e argument without proper bounds checking.\u003c/li\u003e\n\u003cli\u003eThe excessive length of the \u003ccode\u003esubmit-url\u003c/code\u003e argument causes a buffer overflow on the stack.\u003c/li\u003e\n\u003cli\u003eThe attacker overwrites critical data on the stack, such as the return address.\u003c/li\u003e\n\u003cli\u003eUpon function return, control is redirected to an address specified by the attacker.\u003c/li\u003e\n\u003cli\u003eThe attacker executes arbitrary code on the device, potentially gaining full control.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-9481 allows a remote attacker to execute arbitrary code on the vulnerable Edimax EW-7438RPn device. Given the device\u0026rsquo;s likely placement as a network gateway or access point, this could lead to complete compromise of the network, data exfiltration, or denial-of-service conditions. The number of affected devices is unknown, but the existence of public exploit code increases the likelihood of widespread attacks targeting this vulnerability.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect CVE-2026-9481 Exploitation Attempt via Long submit-url\u0026rdquo; to identify potential exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eMonitor webserver logs for abnormal POST requests to the \u003ccode\u003e/goform/formStats\u003c/code\u003e endpoint, looking for unusually long submit-url parameters.\u003c/li\u003e\n\u003cli\u003eApply network intrusion detection rules that look for patterns indicative of buffer overflow attempts in HTTP requests targeting Edimax EW-7438RPn devices.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-26T14:48:18Z","date_published":"2026-05-26T14:48:18Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-9481-edimax-overflow/","summary":"A stack-based buffer overflow vulnerability (CVE-2026-9481) exists in the formStats function of the /goform/formStats file in Edimax EW-7438RPn version 1.31, allowing a remote attacker to execute arbitrary code by manipulating the submit-url argument.","title":"Edimax EW-7438RPn Stack-Based Buffer Overflow Vulnerability (CVE-2026-9481)","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-9481-edimax-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-9481","version":"https://jsonfeed.org/version/1.1"}