{"cve":"CVE-2018-6211","nvd":{"published":"2018-06-20T16:29:00.327","modified":"2026-06-17T02:01:31.240","status":"Modified","description":"On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, and 2.0.22, OS command injection is possible as a result of incorrect processing of the res_buf parameter to index.cgi.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":7.2},"cwes":["CWE-78"],"references":["http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/","https://securelist.com/backdoors-in-d-links-backyard/85530/","https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html","https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/","http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/"],"products":["d-link:dir-620_firmware"],"source":"nvd","synced_at":"2026-10-19T20:51:47.459859389+00:00"},"epss":{"cve":"CVE-2018-6211","score":0.0568,"percentile":0.92991,"date":"2026-10-31"},"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."]}