{"id":"CVE-2026-42019","published":"2026-10-20T21:17:18.903","lastModified":"2026-10-22T15:31:24.813","description":"Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup pppoe 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 pppoe_dns1 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-2026-2394","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"Stack-based buffer overflows in the Totolink X2000R's pppoe_dns1 parameter during formIpv6Setup processing allow authenticated remote code execution via malicious HTTP requests.","exploitability":"Exploitation requires valid authentication and a crafted HTTP request targeting the vulnerable pppoe_dns1 parameter; no public exploit exists, but the high CVSS score indicates low technical barriers for a determined attacker with credentials.","blast_radius":"Successful exploitation could lead to full system compromise including remote code execution, data exfiltration, and service disruption on the affected router.","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":"2026-10-25T08:52:11.974Z"}}