{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-7247/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.2,"id":"CVE-2026-7247"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["DI-8100"],"_cs_severities":["critical"],"_cs_tags":["buffer-overflow","router","remote-code-execution","cve-2026-7247"],"_cs_type":"advisory","_cs_vendors":["D-Link"],"content_html":"\u003cp\u003eA critical buffer overflow vulnerability, tracked as CVE-2026-7247, has been discovered in D-Link DI-8100 router firmware version 16.07.26A1. The vulnerability resides within the \u003ccode\u003efile_exten_asp\u003c/code\u003e function of the \u003ccode\u003efile_exten.asp\u003c/code\u003e component, specifically the File Extension Handler. Successful exploitation could allow an attacker to execute arbitrary code on the device. The vulnerability is triggered by manipulating the \u003ccode\u003eName\u003c/code\u003e argument, leading to a buffer overflow. Publicly available exploits exist, increasing the risk of widespread exploitation. Given the potential for remote exploitation and the existence of public exploits, organizations using the affected D-Link DI-8100 router should take immediate action.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable D-Link DI-8100 router running firmware 16.07.26A1.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the \u003ccode\u003efile_exten.asp\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe crafted request includes a \u003ccode\u003eName\u003c/code\u003e argument with a payload exceeding the buffer size in the \u003ccode\u003efile_exten_asp\u003c/code\u003e function.\u003c/li\u003e\n\u003cli\u003eThe router processes the malicious request, triggering the buffer overflow when handling the oversized \u003ccode\u003eName\u003c/code\u003e argument.\u003c/li\u003e\n\u003cli\u003eThe buffer overflow overwrites adjacent memory regions, potentially including return addresses or function pointers.\u003c/li\u003e\n\u003cli\u003eThe attacker redirects execution flow to injected shellcode or existing code gadgets (ROP).\u003c/li\u003e\n\u003cli\u003eThe injected code executes with the privileges of the web server process.\u003c/li\u003e\n\u003cli\u003eThe attacker gains remote code execution on the D-Link DI-8100 router, potentially allowing for device takeover or network compromise.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows for remote code execution on the D-Link DI-8100 router. An attacker could gain complete control of the device, potentially using it as a pivot point for further attacks within the network. This could lead to data exfiltration, denial of service, or the installation of malicious firmware. Given the existence of public exploits, a wide range of actors could leverage this vulnerability, impacting potentially thousands of devices.\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\u003efile_exten.asp\u003c/code\u003e with abnormally long \u003ccode\u003eName\u003c/code\u003e parameters to detect potential exploitation attempts. (Log Source: webserver, Rule: Suspicious File Extension ASP Request).\u003c/li\u003e\n\u003cli\u003eImplement rate limiting on web requests to the D-Link DI-8100's management interface to mitigate potential brute-force exploitation attempts. (Log Source: firewall, Affected Product: DI-8100 16.07.26A1)\u003c/li\u003e\n\u003cli\u003eApply any available patches or firmware updates released by D-Link to address CVE-2026-7247. (Affected Product: DI-8100 16.07.26A1)\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-28T09:18:52Z","date_published":"2026-04-28T09:18:52Z","id":"https://feed.craftedsignal.io/briefs/2026-04-29-dlink-buffer-overflow/","summary":"A remote buffer overflow vulnerability exists in D-Link DI-8100 version 16.07.26A1's file_exten_asp function, allowing code execution by manipulating the 'Name' argument.","title":"D-Link DI-8100 Buffer Overflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-04-29-dlink-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-7247","version":"https://jsonfeed.org/version/1.1"}