CVE-2018-6211

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.

• CWE-78

• http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/Third Party Advisory
• https://securelist.com/backdoors-in-d-links-backyard/85530/Exploit, Third Party Advisory
• https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.htmlThird Party Advisory
• https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/Third Party Advisory
• http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/Third Party Advisory
• https://securelist.com/backdoors-in-d-links-backyard/85530/Exploit, Third Party Advisory
• https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.htmlThird Party Advisory
• https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/Third Party Advisory

Published

Jun 20, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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