CVE-2018-6530 — Dir-860l Firmware
CRITICALCVE-2018-6530 is a critical-severity (CVSS 9.8) OS Command Injection vulnerability in dlink dir-860l firmware. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-09-08) and has been used in ransomware campaigns — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.
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…
Exploitation Status
Actively exploited in the wild
- Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-09-08 — including use in ransomware campaigns. Federal agencies were required to remediate by 2022-09-29.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2018-6530.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2018-6530 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).
Where this sits among everything scored
Of 396,257 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.
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
dir-860l firmwaredlinkdir-865l firmwaredlinkdir-868l firmwaredlinkdir-880l firmwaredlinkResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Vendor / applianceDetect
Inventory every dlink dir-860l firmware deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2018-6530 yet — track the dlink dir-860l firmware advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
How to detect CVE-2018-6530
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2018-6530 -u https://target- Template
- D-Link - Unauthenticated Remote Code Execution
- Severity
- critical
- Impact
- Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code on the affected device.
- Remediation
- Apply the latest firmware update provided by D-Link to mitigate this vulnerability.
Template by ProjectDiscovery nuclei-templates (gy741), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2018-6530 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.