CVE-2018-6211

high

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.

References

Advisories
More

https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/

https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html

http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/

https://securelist.com/backdoors-in-d-links-backyard/85530/

Details

Source: Mitre, NVD

Published: 2018-06-20

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.2

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H