{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-5608/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-5608"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["buffer-overflow","belkin","cve-2026-5608"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA stack-based buffer overflow vulnerability, identified as CVE-2026-5608, affects Belkin F9K1122 router version 1.00.33. The vulnerability resides within the \u003ccode\u003eformWlanSetup\u003c/code\u003e function of the \u003ccode\u003e/goform/formWlanSetup\u003c/code\u003e file. A remote attacker can exploit this vulnerability by manipulating the \u003ccode\u003ewebpage\u003c/code\u003e argument, leading to arbitrary code execution on the device. This vulnerability is particularly critical because a public exploit is available, increasing the likelihood of widespread exploitation. The vendor has not responded to disclosure attempts, further compounding the risk. Successful exploitation could compromise the device\u0026rsquo;s functionality and potentially allow the attacker to gain control of the network.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable Belkin F9K1122 router running firmware version 1.00.33.\u003c/li\u003e\n\u003cli\u003eThe attacker sends a crafted HTTP request to the \u003ccode\u003e/goform/formWlanSetup\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe HTTP request includes a malicious payload within the \u003ccode\u003ewebpage\u003c/code\u003e argument, designed to overflow the stack buffer.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eformWlanSetup\u003c/code\u003e function processes the request without proper bounds checking on the \u003ccode\u003ewebpage\u003c/code\u003e argument.\u003c/li\u003e\n\u003cli\u003eThe overflow overwrites critical data on the stack, including the return address.\u003c/li\u003e\n\u003cli\u003eUpon function return, control is redirected to the attacker\u0026rsquo;s injected code.\u003c/li\u003e\n\u003cli\u003eThe attacker\u0026rsquo;s code executes with the privileges of the web server process.\u003c/li\u003e\n\u003cli\u003eThe attacker gains control of the device and can execute arbitrary commands or modify router settings.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5608 can lead to complete compromise of the affected Belkin F9K1122 router. An attacker could potentially gain unauthorized access to the network, intercept or modify network traffic, or use the compromised device as a point of entry for further attacks on other devices on the network. Given the availability of a public exploit, a large number of Belkin F9K1122 devices are at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect Belkin F9K1122 Buffer Overflow Attempt\u003c/code\u003e to identify exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious POST requests to \u003ccode\u003e/goform/formWlanSetup\u003c/code\u003e with unusually long \u003ccode\u003ewebpage\u003c/code\u003e arguments to identify potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eSince there is no patch available, network segmentation should be implemented to limit the impact of a compromised device, particularly for vulnerable Belkin F9K1122 routers.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T01:16:40Z","date_published":"2026-04-06T01:16:40Z","id":"/briefs/2026-04-belkin-buffer-overflow/","summary":"A stack-based buffer overflow vulnerability (CVE-2026-5608) exists in the formWlanSetup function of Belkin F9K1122 version 1.00.33, allowing remote attackers to execute arbitrary code by manipulating the 'webpage' argument in the /goform/formWlanSetup file.","title":"Belkin F9K1122 Stack-Based Buffer Overflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-04-belkin-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-5608","version":"https://jsonfeed.org/version/1.1"}