{"id":"CVE-2026-42023","published":"2026-10-20T21:17:19.373","lastModified":"2026-10-23T23:17:43.830","description":"Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static network configuration functionality of Totolink X2000R 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 concerns the static_ipv6 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-2026-2395","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The Totolink X2000R router's static IPv6 configuration endpoint (formIpv6Setup) contains stack-based buffer overflows when processing the static_ipv6 parameter, allowing authenticated attackers to overwrite the stack and potentially execute arbitrary code.","exploitability":"Exploitation requires valid administrative credentials and a single authenticated HTTP request; no user interaction is needed.","blast_radius":"Successful exploitation grants full system compromise (confidentiality, integrity, and availability) on the vulnerable router, enabling complete network takeover and potential pivot to internal devices.","remediation":"Upgrade to firmware version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 or later, as this is the only fixed version explicitly referenced in the description.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","buffer-overflow","web","authenticated"],"model":"garnet-coder","analyzedAt":"2026-10-25T08:52:44.074Z"}}