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CVE-2019-11930

9.8 · CRITICAL

An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution.

Published Dec 4, 2019CWE-763EPSS 3.25%

Overview

CVE-2019-11930 is a critical-severity vulnerability. It was published on December 4, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36Refhhvm.com/blog/2019/10/28/security-update.htmlRefwww.facebook.com/security/advisories/cve-2019-11930GitHubgithub.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36Refhhvm.com/blog/2019/10/28/security-update.htmlRefwww.facebook.com/security/advisories/cve-2019-11930

How CyberStrike helps

Frequently asked questions

What is CVE-2019-11930?

CVE-2019-11930 is a critical-severity vulnerability. It was published on December 4, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2019-11930?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-11930?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2019-11930?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-11930 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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