CVE-2018-12550
8.1 · HIGHOverview
CVE-2018-12550 is a high-severity vulnerability affecting eclipse mosquitto. It was published on March 27, 2019 and has a CVSS 3.0 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.0 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use an ACL file, and that ACL file is empty, or contains only comments or blank lines, then Mosquitto will treat this as though no ACL file has been defined and use a default allow policy. The new behaviour is to have an empty ACL file mean that all access is denied, which is not a useful configuration but is not unexpected.
Remediation
Check the references section for vendor advisories and patches from eclipse. Update mosquitto to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| eclipse | mosquitto | 1.0 | Affected |
Frequently Asked Questions
What is CVE-2018-12550?
CVE-2018-12550 is a high-severity vulnerability affecting eclipse mosquitto. It was published on March 27, 2019 and has a CVSS 3.0 base score of 8.1 (HIGH).
How severe is CVE-2018-12550?
This vulnerability has a CVSS 3.0 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-12550?
Check the references section for vendor advisories and patches from eclipse. Update mosquitto to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2018-12550?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-12550 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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