Known exploited vulnerability · CISA KEV

CVE-2018-6530: D-Link Multiple Routers OS Command Injection Vulnerability

Multiple D-Link routers contain an unspecified vulnerability that allows for execution of OS commands.

CVE-2018-6530

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2022-09-08: attackers are using it right now. It is known to be used in ransomware campaigns.

CISA KEV: Listed; Added 2022-09-08 · federal fix-by 2022-09-29
EPSS (30 days): 97%; Higher than 99.9% of CVEs · 2026-11-01
CVSS v3.1: 9.8 Critical; CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What CISA says

D-Link Multiple Routers OS Command Injection Vulnerability

The vendor D-Link published an advisory stating the fix under CVE-2018-20114 properly patches KEV entry CVE-2018-6530. If the device is still supported, apply updates per vendor instructions. If the affected device has since entered its end-of-life, it should be disconnected if still in use.

NVD description · published 2018-03-06

OS command injection vulnerability in soap.cgi (soapcgi_main in cgibin) in D-Link DIR-880L DIR-880L_REVA_FIRMWARE_PATCH_1.08B04 and previous versions, DIR-868L DIR868LA1_FW112b04 and previous versions, DIR-65L DIR-865L_REVA_FIRMWARE_PATCH_1.08.B01 and previous versions, and DIR-860L DIR860LA1_FW110b04 and previous versions allows remote attackers to execute arbitrary OS commands via the service parameter.

Full record on NVD

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How to check if you are exposed to CVE-2018-6530

Find every D-Link Multiple Routers system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2018-6530.

US federal agencies had to fix this by 2022-09-29. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2018-6530. Check the vendor advisory for the exact fixed builds before you sign anything off.

Product	Vulnerable versions
D-Link Dir-860l Firmware	up to and including 1.10b04
D-Link Dir-865l Firmware	up to and including 1.08b01
D-Link Dir-868l Firmware	up to and including 1.12b04
D-Link Dir-880l Firmware	up to and including 1.08b04

Timeline

2018-03-06 · Published in the National Vulnerability Database
2022-09-08 · Added to CISA's Known Exploited Vulnerabilities catalog, 1,647 days after it was published
2022-09-29 · Fix-by date for US federal agencies, passed 1,494 days ago

Vendor advisories and fixes

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10105

Weakness type

CWE-78

More exploited D-Link vulnerabilities

CISA lists 26 exploited D-Link vulnerabilities. The closest matches:

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.