{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/di-8100-16.07.26a1/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.2,"id":"CVE-2026-7856"}],"_cs_exploited":false,"_cs_products":["DI-8100 (16.07.26A1)"],"_cs_severities":["high"],"_cs_tags":["buffer-overflow","web-application","router"],"_cs_type":"advisory","_cs_vendors":["D-Link"],"content_html":"\u003cp\u003eA buffer overflow vulnerability, identified as CVE-2026-7856, has been discovered in D-Link DI-8100 version 16.07.26A1. The vulnerability resides within the Web Management Interface component, specifically in the \u003ccode\u003e/url_member.asp\u003c/code\u003e file. This flaw can be triggered by manipulating the \u003ccode\u003eName\u003c/code\u003e argument, potentially leading to arbitrary code execution. An attacker can exploit this remotely. Publicly available exploit code exists. The vulnerability poses a significant risk to users of the affected D-Link router model, potentially allowing unauthorized access and control of the device and the network it serves. This requires immediate attention from security teams to mitigate potential exploitation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a D-Link DI-8100 router running firmware version 16.07.26A1 exposed to the internet.\u003c/li\u003e\n\u003cli\u003eThe attacker sends a specially crafted HTTP request to the \u003ccode\u003e/url_member.asp\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe HTTP request includes a malformed \u003ccode\u003eName\u003c/code\u003e parameter designed to cause a buffer overflow when processed by the Web Management Interface.\u003c/li\u003e\n\u003cli\u003eThe Web Management Interface attempts to process the oversized \u003ccode\u003eName\u003c/code\u003e parameter without proper bounds checking.\u003c/li\u003e\n\u003cli\u003eThe buffer overflow overwrites adjacent memory regions, potentially including critical program data or execution pointers.\u003c/li\u003e\n\u003cli\u003eThe attacker redirects execution flow to malicious code injected within the overflowed buffer.\u003c/li\u003e\n\u003cli\u003eThe injected code executes with the privileges of the Web Management Interface process.\u003c/li\u003e\n\u003cli\u003eThe attacker gains control of the router, enabling them to modify configurations, intercept network traffic, or perform other malicious actions.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-7856 can lead to complete compromise of the D-Link DI-8100 router. This could allow attackers to intercept network traffic, modify router configurations, or use the compromised device as a pivot point for further attacks within the network. Given the widespread use of D-Link routers, a successful large-scale attack could impact numerous home and business networks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect web server logs for suspicious POST requests to \u003ccode\u003e/url_member.asp\u003c/code\u003e with unusually long \u003ccode\u003eName\u003c/code\u003e parameters to detect potential exploit attempts, using the Sigma rule \u003ccode\u003eDetect D-Link DI-8100 Buffer Overflow Attempt\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eApply available patches or firmware updates for D-Link DI-8100 version 16.07.26A1 to remediate CVE-2026-7856.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for connections to or from the malicious URLs provided as IOCs, blocking them where possible to prevent exploitation.\u003c/li\u003e\n\u003cli\u003eReview the GitHub exploit (\u003ca href=\"https://github.com/draw-ctf/report/blob/main/DI-8100/url_member_asp_overflow.md\"\u003ehttps://github.com/draw-ctf/report/blob/main/DI-8100/url_member_asp_overflow.md\u003c/a\u003e) to understand the exploitation technique and identify potential indicators of compromise.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-05T20:16:41Z","date_published":"2026-05-05T20:16:41Z","id":"/briefs/2026-05-dlink-buffer-overflow/","summary":"A buffer overflow vulnerability exists in D-Link DI-8100 version 16.07.26A1 affecting the Web Management Interface component via manipulation of the Name argument in the /url_member.asp file, enabling a remote attacker to potentially execute arbitrary code; an exploit is publicly available.","title":"D-Link DI-8100 Web Management Interface Buffer Overflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-dlink-buffer-overflow/"},{"_cs_actors":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-7853"}],"_cs_exploited":false,"_cs_products":["DI-8100 (16.07.26A1)"],"_cs_severities":["critical"],"_cs_tags":["buffer overflow","remote code execution","d-link","cve-2026-7853"],"_cs_type":"advisory","_cs_vendors":["D-Link"],"content_html":"\u003cp\u003eA critical buffer overflow vulnerability, tracked as CVE-2026-7853, affects D-Link DI-8100 routers running firmware version 16.07.26A1. The vulnerability resides within the \u003ccode\u003esprintf\u003c/code\u003e function of the \u003ccode\u003e/auto_reboot.asp\u003c/code\u003e file, which is part of the HTTP handler component. An attacker can exploit this flaw by crafting a malicious HTTP request with an overly long string in the \u003ccode\u003eenable/time\u003c/code\u003e argument. This causes a buffer overflow when the \u003ccode\u003esprintf\u003c/code\u003e function attempts to write the data to a fixed-size buffer, potentially leading to arbitrary code execution on the device. The vulnerability is remotely exploitable and has a public exploit available, making it an attractive target for attackers. Successful exploitation allows attackers to gain control of the router, potentially enabling them to intercept network traffic, modify router settings, or use the device as a foothold for further attacks within 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 D-Link DI-8100 router running firmware version 16.07.26A1.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP GET or POST request targeting the \u003ccode\u003e/auto_reboot.asp\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe crafted request includes the \u003ccode\u003eenable/time\u003c/code\u003e argument with a string exceeding the buffer\u0026rsquo;s capacity.\u003c/li\u003e\n\u003cli\u003eThe router\u0026rsquo;s HTTP handler processes the request and passes the \u003ccode\u003eenable/time\u003c/code\u003e argument to the \u003ccode\u003esprintf\u003c/code\u003e function.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esprintf\u003c/code\u003e attempts to write the oversized string into a fixed-size buffer, causing a buffer overflow.\u003c/li\u003e\n\u003cli\u003eThe buffer overflow overwrites adjacent memory locations, potentially including the return address of the function.\u003c/li\u003e\n\u003cli\u003eUpon function return, the overwritten return address is used, redirecting execution to attacker-controlled code.\u003c/li\u003e\n\u003cli\u003eThe attacker\u0026rsquo;s code executes with the privileges of the HTTP handler, potentially gaining complete control of the router.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-7853 allows a remote attacker to execute arbitrary code on the affected D-Link DI-8100 router. This can lead to a complete compromise of the device, enabling attackers to intercept network traffic, modify DNS settings, create VPN tunnels, or use the router as a botnet node. Given the availability of a public exploit, vulnerable routers are at high risk of being targeted in automated attacks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply available patches or firmware updates provided by D-Link to address CVE-2026-7853 when available.\u003c/li\u003e\n\u003cli\u003eMonitor webserver logs for suspicious requests targeting the \u003ccode\u003e/auto_reboot.asp\u003c/code\u003e endpoint with unusually long \u003ccode\u003eenable/time\u003c/code\u003e parameters and deploy the Sigma rule \u0026ldquo;Detect CVE-2026-7853 Exploit Attempt via Long URI\u0026rdquo; to identify potential exploit attempts.\u003c/li\u003e\n\u003cli\u003eImplement network intrusion detection systems (IDS) rules to detect and block malicious HTTP requests exploiting CVE-2026-7853.\u003c/li\u003e\n\u003cli\u003eDisable remote administration access to the router to reduce the attack surface.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"/briefs/2024-01-dlink-cve-2026-7853/","summary":"D-Link DI-8100 version 16.07.26A1 is vulnerable to a remote buffer overflow in the `sprintf` function within the `/auto_reboot.asp` file's HTTP handler component due to improper handling of the `enable/time` argument, potentially leading to arbitrary code execution.","title":"D-Link DI-8100 Remote Buffer Overflow Vulnerability (CVE-2026-7853)","url":"https://feed.craftedsignal.io/briefs/2024-01-dlink-cve-2026-7853/"}],"language":"en","title":"CraftedSignal Threat Feed — DI-8100 (16.07.26A1)","version":"https://jsonfeed.org/version/1.1"}