CVE-2018-6211

Name: CVE-2018-6211
Creator: NVD / NIST
Published: 2018-06-20T16:29:00.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.77%

Last modified Jun 17, 2026

CVE-2018-6211 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.77% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

5.77%

92.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
D-Link	Dir-620 Firmware	1.0.3
D-Link	Dir-620 Firmware	1.0.37
D-Link	Dir-620 Firmware	1.3.1
D-Link	Dir-620 Firmware	1.3.3
D-Link	Dir-620 Firmware	1.3.7
D-Link	Dir-620 Firmware	1.4.0
D-Link	Dir-620 Firmware	2.0.22

References

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

Timeline

Published: Jun 20, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6211?

How severe is CVE-2018-6211?

Severity scoring for CVE-2018-6211 is pending analysis. The EPSS model estimates a 5.77% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6211?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6211?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST