How severe is CVE-2018-6530?

CVE-2018-6530 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2018-6530?

Affected package information for CVE-2018-6530 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2018-6530?

No fixed version has been published for CVE-2018-6530 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2018-6530 actively exploited in the wild?

Yes. There are 3 known exploit references for CVE-2018-6530, including 3 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2018-6530?

CVE-2018-6530 has an EPSS (Exploit Prediction Scoring System) score of 94.2%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2018-6530 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2018-6530 (D-Link Multiple Routers OS Command Injection Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-09-08. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-09-29. The required action was: 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. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2018-6530?

CVE-2018-6530 is classified as OS Command Injection (CWE-78). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2018-6530?

CVE-2018-6530 affects dlink dir-860l firmware; dlink dir-865l firmware; dlink dir-868l firmware; dlink dir-880l firmware. Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2018-6530?

A Nuclei detection template exists for CVE-2018-6530, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2018-6530 published, and has it been updated?

CVE-2018-6530 was published on March 6, 2018 and was last updated on November 7, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-09-08 — agencies required to remediate by 2022-09-29 · Ransomware

CVE-2018-6530

CRITICAL

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…

Published

Mar 6, 2018

Updated

Nov 7, 2025

Affected

0 pkgs

Patched

None yet

Exploits

3 known

EPSS Exploitation Probability

via FIRST.org ↗

94.2%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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.

Affected Products

4 products · 4 configurations

dir-860l firmwaredlink

≤ 1.10b04

range

dir-865l firmwaredlink

≤ 1.08b01

range

dir-868l firmwaredlink

≤ 1.12b04

range

dir-880l firmwaredlink

≤ 1.08b04

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

OS command injection vulnerability in soap.cgi (soapcgi_main in cgibin) …

github.comNVDMar 2018

OS command injection vulnerability in soap.cgi (soapcgi_main in cgibin) …

unit42.paloaltonetworks.comAPISep 2022

OS command injection vulnerability in soap.cgi (soapcgi_main in cgibin) …

cisa.govCISASep 2022

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2018-6530 in your stack?

O3 detects CVE-2018-6530 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

9.8/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

None

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-78OS Command Injection

Weaponization

Timeline

Disclosed

Mar 6, 2018

First exploit

Mar 27, 2018

KEV added

Sep 8, 2022

Last updated

Nov 7, 2025

Identifiers

CVE-2018-6530

References

Advisoryftp2.dlink.com Advisoryftp2.dlink.com Advisoryftp2.dlink.com Advisoryftp2.dlink.com Advisoryftp2.dlink.com Advisoryftp2.dlink.com Advisoryftp2.dlink.com Advisoryftp2.dlink.com Exploit / PoCgithub.com Exploit / PoCgithub.com Webcisa.gov

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