{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/vendors/trendnet/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-7607"}],"_cs_exploited":false,"_cs_products":["TEW-821DAP (1.12B01)"],"_cs_severities":["medium"],"_cs_tags":["buffer-overflow","firmware-update","network-device"],"_cs_type":"advisory","_cs_vendors":["TRENDnet"],"content_html":"\u003cp\u003eCVE-2026-7607 describes a buffer overflow vulnerability affecting TRENDnet TEW-821DAP version 1.12B01. The vulnerability resides within the auto_update_firmware function of the Firmware Update component. A remote attacker can exploit this flaw by sending a crafted request with a maliciously oversized \u0026lsquo;str\u0026rsquo; argument, leading to a buffer overflow. Although the CVSS score is high, the vendor has stated that the affected product reached its end-of-life 8 years ago and is no longer supported, significantly reducing the risk of widespread exploitation. This lack of support means no patches or updates will be provided, leaving vulnerable devices exposed if still in operation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable TRENDnet TEW-821DAP device running firmware version 1.12B01.\u003c/li\u003e\n\u003cli\u003eAttacker sends a specially crafted network packet to the device, targeting the Firmware Update component.\u003c/li\u003e\n\u003cli\u003eThe packet includes a malicious \u0026lsquo;str\u0026rsquo; argument exceeding the buffer\u0026rsquo;s allocated size in the auto_update_firmware function.\u003c/li\u003e\n\u003cli\u003eThe device attempts to process the firmware update, copying the oversized \u0026lsquo;str\u0026rsquo; argument into the undersized buffer.\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\u003eAttacker hijacks control of the execution flow by overwriting the return address with the address of malicious code.\u003c/li\u003e\n\u003cli\u003eThe device executes the attacker\u0026rsquo;s arbitrary code with the privileges of the Firmware Update component.\u003c/li\u003e\n\u003cli\u003eThe attacker gains control of the device, potentially enabling further malicious activities.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this buffer overflow vulnerability could allow an attacker to gain complete control over the affected TRENDnet TEW-821DAP device. This could lead to unauthorized network access, data theft, or the device being used as a bot in a larger attack. Given that the affected product is EOL, the number of actively exploitable devices is likely low, but any remaining devices are at significant risk since no patch will be available.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdentify and isolate any TRENDnet TEW-821DAP devices running firmware version 1.12B01 on your network. Consider decommissioning them if possible due to the end-of-life status and lack of security updates.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for suspicious packets targeting the Firmware Update component of TRENDnet devices. Implement intrusion detection rules to identify and block potentially malicious requests (see example Sigma rule below).\u003c/li\u003e\n\u003cli\u003eSince this is a buffer overflow on a network device, monitor for unusual process creation or network connections originating from TRENDnet devices.\u003c/li\u003e\n\u003cli\u003eDeploy the provided Sigma rule to detect attempts to exploit the vulnerability by monitoring for unusual data lengths in network traffic related to firmware updates.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-02T08:16:28Z","date_published":"2026-05-02T08:16:28Z","id":"/briefs/2024-01-trendnet-buffer-overflow/","summary":"A buffer overflow vulnerability exists in TRENDnet TEW-821DAP version 1.12B01, allowing a remote attacker to execute arbitrary code by manipulating the 'str' argument in the auto_update_firmware function of the Firmware Update component.","title":"TRENDnet TEW-821DAP Firmware Update Buffer Overflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2024-01-trendnet-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — TRENDnet","version":"https://jsonfeed.org/version/1.1"}