{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-9479/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-9479"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["EW-7438RPn 1.31"],"_cs_severities":["critical"],"_cs_tags":["cve-2026-9479","buffer-overflow","web-application"],"_cs_type":"threat","_cs_vendors":["Edimax"],"content_html":"\u003cp\u003eA stack-based buffer overflow vulnerability, tracked as CVE-2026-9479, has been identified in Edimax EW-7438RPn version 1.31. The vulnerability resides within the \u003ccode\u003eformLogout\u003c/code\u003e function of the \u003ccode\u003e/goform/formLogout\u003c/code\u003e file. By manipulating the \u003ccode\u003esubmit-url\u003c/code\u003e argument, a remote attacker can trigger a buffer overflow, potentially leading to arbitrary code execution. Publicly available exploit code exists for this vulnerability. The vendor was notified but did not respond to the disclosure. This vulnerability poses a significant risk to devices exposed to untrusted networks.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies an Edimax EW-7438RPn device running firmware version 1.31.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious HTTP request targeting the \u003ccode\u003e/goform/formLogout\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe crafted request includes a \u003ccode\u003esubmit-url\u003c/code\u003e argument with a string exceeding the buffer\u0026rsquo;s capacity.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eformLogout\u003c/code\u003e function processes the \u003ccode\u003esubmit-url\u003c/code\u003e argument without proper bounds checking.\u003c/li\u003e\n\u003cli\u003eThe excessive data overwrites memory on the stack, including the return address.\u003c/li\u003e\n\u003cli\u003eThe function attempts to return, but the overwritten return address redirects execution to attacker-controlled code.\u003c/li\u003e\n\u003cli\u003eAttacker gains arbitrary code execution on the device.\u003c/li\u003e\n\u003cli\u003eAttacker leverages code execution to establish persistence or further compromise the network.\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 code on the Edimax EW-7438RPn device. This could lead to a complete compromise of the device, including data exfiltration, modification of device settings, or use of the device as a bot in a larger attack. Given the lack of vendor response, affected devices remain vulnerable.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor web server logs for POST requests to \u003ccode\u003e/goform/formLogout\u003c/code\u003e with abnormally long \u003ccode\u003esubmit-url\u003c/code\u003e parameters using the Sigma rule provided below.\u003c/li\u003e\n\u003cli\u003eImplement web application firewall (WAF) rules to block requests containing excessively long \u003ccode\u003esubmit-url\u003c/code\u003e parameters to \u003ccode\u003e/goform/formLogout\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eSince the vendor has not provided a patch, consider replacing the affected Edimax EW-7438RPn devices.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-26T14:39:49Z","date_published":"2026-05-26T14:39:49Z","id":"https://feed.craftedsignal.io/briefs/2026-05-edimax-buffer-overflow/","summary":"A stack-based buffer overflow vulnerability (CVE-2026-9479) exists in the formLogout function of the /goform/formLogout file in Edimax EW-7438RPn 1.31, triggered by manipulating the submit-url argument, allowing remote attackers to execute arbitrary code.","title":"Edimax EW-7438RPn Stack-Based Buffer Overflow Vulnerability (CVE-2026-9479)","url":"https://feed.craftedsignal.io/briefs/2026-05-edimax-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-9479","version":"https://jsonfeed.org/version/1.1"}