{"cve":"CVE-2026-11834","nvd":{"published":"2026-06-22T19:16:38.963","modified":"2026-06-26T22:16:30.897","status":"Awaiting Analysis","description":"A command\ninjection vulnerability has been identified in the DHCP option processing logic\nin multiple TP-Link router models, due to insufficient validation of externally\nsupplied DHCP option data. An adjacent attacker may exploit this\nvulnerability by supplying crafted DHCP responses, potentially resulting in unauthorized\ncommand execution during device initialization or provisioning workflows. This\ntypically occurs when the device is in a factory-default or unconfigured state.\n\n\n\n\n\nSuccessful\nexploitation may allow an adjacent, unauthenticated attacker to execute\narbitrary commands with elevated privileges, potentially leading to full\ncompromise of the affected device and unauthorized administrative control.","cvss_v4":{"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":null,"cwes":["CWE-78"],"references":["https://mattg.systems/posts/cve-2026-11834/","https://www.tp-link.com/en/support/download/archer-c20/","https://www.tp-link.com/en/support/download/archer-mr200/#Firmware","https://www.tp-link.com/en/support/download/archer-mr402/#Firmware","https://www.tp-link.com/en/support/download/archer-vr2100/#Firmware"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:39:28.638635428+00:00"},"epss":{"cve":"CVE-2026-11834","score":0.00665,"percentile":0.51813,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}