CVE-2018-6530
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedOS 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceCritical OS command injection vulnerability in D-Link DIR-880L, DIR-868L, DIR-865L, and DIR-860L routers. The soap.cgi CGI script fails to properly sanitize user input passed through the 'service' parameter, allowing remote attackers to inject and execute arbitrary operating system commands on the affected devices.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 1.10b04<= 1.08b01<= 1.12b04<= 1.08b04CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify router modelAccess the router admin interface and check the device information page, or look at the physical device label to confirm the exact model (DIR-860L, DIR-865L, DIR-868L, or DIR-880L).Affected if The router model is one of these four affected models.
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Check installed firmware versionLog into the router web interface and navigate to the Status or Management section to view the firmware version. Compare this version against the affected ranges: DIR-860L <= 1.10b04, DIR-865L <= 1.08b01, DIR-868L <= 1.12b04, DIR-880L <= 1.08b04.Affected if The installed firmware version falls at or below the affected version for your specific model.
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Verify soap.cgi endpoint is accessibleAttempt to access the soap.cgi binary via HTTP (commonly at /soap.cgi or /cgi-bin/soap.cgi) from both LAN and WAN interfaces to confirm the endpoint exists and responds.Affected if The soap.cgi endpoint responds to requests, indicating the vulnerable CGI binary is present.
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Check web interface WAN exposureDetermine if the router's web management interface is reachable from the WAN/internet by accessing the router's public IP address on ports 80 or 443 from an external network, or by checking the router's firewall/remote management settings.Affected if The router's web interface is accessible from WAN-facing networks, enabling remote exploitation.
The device is affected if it is a DIR-860L, DIR-865L, DIR-868L, or DIR-880L running firmware at or below the specified version limits AND the soap.cgi endpoint is accessible, particularly from WAN.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor firmware patches when available; alternatively, disable remote access to the router's web interface from untrusted networks or implement network segmentation to limit exposure to this vulnerability.
- Consultation6.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-6530 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-6530 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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