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Vulnerability record · CVE-2018-6212 · published 20 June 2018

CVE-2018-6212: D-link dir-620 firmware cross-site scripting vulnerability

D Link · Dir 620 Firmware

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, a reflected Cross-Site Scripting (XSS) attack is possible as a result of missed filtration for special characters in the "Search" field and incorrect processing of the XMLHttpRequest object.

6.1 CVSS 3.0 Medium EPSS 1.8% · top 22.9% CWE-79 · Cross-site scripting
6.1CVSS 3.0 base score, v2 4.3
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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, a reflected Cross-Site Scripting (XSS) attack is possible as a result of missed filtration for special characters in the "Search" field and incorrect processing of the XMLHttpRequest object.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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/ ExploitThird Party Advisory
https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html Third 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/ ExploitThird Party Advisory
https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html Third Party Advisory
https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-6212), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.