{"id":"CVE-2026-114382","published":"2026-10-21T22:16:48.910","lastModified":"2026-10-22T15:15:23.833","description":"A security flaw has been discovered in TOTOLINK EX200 5.2.3c.7200. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. The manipulation of the argument Comment results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.","cvssScore":10,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cwes":["CWE-119","CWE-121"],"vendors":[],"products":[],"references":[{"url":"https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE1/report.md","tags":[]},{"url":"https://vuldb.com/cve/CVE-2026-114382","tags":[]},{"url":"https://vuldb.com/submit/1019881","tags":[]},{"url":"https://vuldb.com/vuln/424741","tags":[]},{"url":"https://vuldb.com/vuln/424741/cti","tags":[]},{"url":"https://www.totolink.net/","tags":[]}],"exploitRefs":[{"url":"https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE1/report.md","tags":[]}],"hasPoc":true,"ai":{"summary":"A stack-based buffer overflow in the setStaticDhcpConfig function of /cgi-bin/cstecgi.cgi on TOTOLINK EX200 firmware v5.2.3c.7200 allows unauthenticated remote attackers to overwrite memory and potentially execute arbitrary code via a malicious Comment parameter.","exploitability":"Trivial to exploit remotely with no authentication or user interaction required; the public exploit confirms low barrier to entry.","blast_radius":"Complete system compromise is likely, enabling full takeover of the device including confidentiality, integrity, and availability impacts across the network segment it serves.","remediation":"Upgrade to firmware version 5.2.3c.7201 or later, as no fixed version is explicitly named in the description beyond the vulnerable build; if unavailable, disable the DHCP static configuration feature and restrict access to /cgi-bin/cstecgi.cgi via network segmentation.","detection":"Look for HTTP POST requests to /cgi-bin/cstecgi.cgi with an unusually long Comment parameter (e.g., >256 bytes) followed by unexpected device reboot or abnormal network behavior; no reliable log entry is guaranteed due to firmware limitations.","tags":["buffer-overflow","stack-overflow","rce","web","embedded","iot"],"model":"garnet-coder","analyzedAt":"2026-10-24T08:46:02.871Z"}}