{"id":"CVE-2026-9659","published":"2026-10-20T21:17:22.410","lastModified":"2026-10-22T15:31:24.813","description":"Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formFilter 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 these vulnerabilities. This vulnerability deals with the vpnUser parameter.","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-2026-2425","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"Stack-based buffer overflow in the vpnUser parameter of X2000R's formFilter functionality allows authenticated remote attackers to execute arbitrary code via crafted HTTP requests.","exploitability":"Exploitation requires valid authentication and a specially crafted HTTP request targeting the vulnerable formFilter endpoint; no public exploit exists yet, but the high CVSS score indicates low technical barriers for an attacker with credentials.","blast_radius":"Successful exploitation could lead to full system compromise including confidentiality, integrity, and availability impacts on the affected device.","remediation":"Upgrade to TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 or later, as this is the only version explicitly referenced in the description that may contain a fix.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","buffer-overflow","web","authenticated"],"model":"garnet-coder","analyzedAt":"2026-10-26T08:45:45.856Z"}}