{"id":"CVE-2026-42026","title":"Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327)","summary":"Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted HTTP request can lead to arbitra…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-121"],"vendor":"totolink","product":"Totolink","affected":["Totolink TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-23T20:45:21.544819Z"},"published":"2026-10-20","updated":"2026-10-23","sourceUpdated":"2026-10-23T22:08:36.350Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-42026","references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2026-2396","label":"https://talosintelligence.com/vulnerability_reports/TALOS-2026-2396"}],"tags":["cve.org"],"epss":0.00512,"epssPercentile":0.43476,"ingestedAt":"2026-10-20T21:19:21.275Z","slug":"CVE-2026-42026","body":"## Overview\n\nMultiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns 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 concerns the dhcp_dns2 parameter.\n\n## Affected\n\n- `Totolink TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}