{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-4551/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Tenda F453"],"_cs_severities":["critical"],"_cs_tags":["tenda","router","buffer-overflow","cve-2026-4551"],"_cs_type":"advisory","_cs_vendors":["Tenda"],"content_html":"\u003cp\u003eA critical stack-based buffer overflow vulnerability, identified as CVE-2026-4551, has been discovered in Tenda F453 version 1.0.0.3. The vulnerability resides within the \u003ccode\u003efromSafeClientFilter\u003c/code\u003e function of the \u003ccode\u003e/goform/SafeClientFilter\u003c/code\u003e component, specifically in the Parameters Handler. Successful exploitation can occur remotely and allows attackers to execute arbitrary code on the affected device. Publicly available exploits exist, increasing the risk of widespread exploitation. Routers are often targeted due to their perimeter position and the potential to compromise entire networks. Defenders should prioritize patching and implement detection measures to mitigate the risk.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a Tenda F453 router running firmware version 1.0.0.3.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the \u003ccode\u003e/goform/SafeClientFilter\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe attacker injects a payload into the \u003ccode\u003emenufacturer/Go\u003c/code\u003e argument within the HTTP request.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003efromSafeClientFilter\u003c/code\u003e function processes the attacker-controlled input without proper bounds checking.\u003c/li\u003e\n\u003cli\u003eThe oversized input overflows the stack-based buffer.\u003c/li\u003e\n\u003cli\u003eThe overflow overwrites critical data on the stack, including the return address.\u003c/li\u003e\n\u003cli\u003eThe attacker gains arbitrary code execution on the router, potentially leading to full system compromise.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-4551 allows a remote attacker to execute arbitrary code on the Tenda F453 router. This can lead to a complete compromise of the device, potentially enabling attackers to intercept network traffic, modify router settings, or use the device as a botnet node. While the exact number of affected devices is unknown, the public availability of exploits significantly increases the risk of widespread exploitation and potential damage to home and small business networks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply available patches or firmware updates provided by Tenda for the F453 router to address CVE-2026-4551 (refer to Tenda's website for updates).\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious POST requests to \u003ccode\u003e/goform/SafeClientFilter\u003c/code\u003e with unusually long \u003ccode\u003emenufacturer\u003c/code\u003e or \u003ccode\u003eGo\u003c/code\u003e parameters (see Sigma rule below).\u003c/li\u003e\n\u003cli\u003eImplement rate limiting on HTTP POST requests to the \u003ccode\u003e/goform/SafeClientFilter\u003c/code\u003e endpoint to mitigate potential exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-03-tenda-f453-buffer-overflow/","summary":"A stack-based buffer overflow vulnerability (CVE-2026-4551) exists in Tenda F453 version 1.0.0.3, allowing remote attackers to execute arbitrary code by manipulating the 'menufacturer/Go' argument in the fromSafeClientFilter function.","title":"Tenda F453 Stack-Based Buffer Overflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2024-01-03-tenda-f453-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-4551","version":"https://jsonfeed.org/version/1.1"}