{"id":"CVE-2018-6211","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-6211","generatedAt":"2026-10-28T20:26:00.199Z","title":"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.","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.","published":"2018-06-20T16:29:00.000Z","lastModified":"2026-06-17T02:01:31.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":7.2,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["d-link/dir-620 firmware"],"epss":{"score":0.0568,"percentile":0.92951,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (5.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://securelist.com/backdoors-in-d-links-backyard/85530/","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://securelist.com/backdoors-in-d-links-backyard/85530/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-6211","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}