{"id":"CVE-2026-9817","published":"2026-10-20T21:17:22.900","lastModified":"2026-10-23T23:19:50.960","description":"A stack-based buffer overflow vulnerability exists in the boa formUploadFile functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.","cvssScore":9.1,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwes":["CWE-121"],"vendors":[],"products":[],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2026-2429","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A stack-based buffer overflow in the formUploadFile functionality of the X2000R router allows authenticated attackers to overwrite stack memory via a malicious HTTP request, potentially leading to arbitrary code execution.","exploitability":"Exploitation requires valid authentication and sending a specially crafted HTTP request; no public exploit exists yet, making it moderately difficult for adversaries without internal knowledge.","blast_radius":"Successful exploitation could allow full compromise of the device, including data exfiltration, device takeover, or use as a pivot point within the local network.","remediation":"Upgrade to TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 or later; if that version is not yet available, disable the formUploadFile endpoint and restrict administrative access to trusted IPs.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","buffer-overflow","web","authentication"],"model":"garnet-coder","analyzedAt":"2026-10-26T08:46:34.916Z"}}