What is CVE-2019-11930?

CVE-2019-11930 is a critical-severity vulnerability in Facebook Hhvm, classified under Release of Invalid Pointer or Reference. CVSS score: 9.8/10. Published 2019-12-04.

How severe is CVE-2019-11930?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Facebook Hhvm

CVE-2019-11930

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…

EPSS: 0.032 (87.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Facebook Hhvm — versions unspecified, 4.24.0, 4.28.2

Weakness classification (CWE)

CWE-763 — Release of Invalid Pointer or Reference

References

cve-assign@fb.com (x_refsource_CONFIRM, Patch)
cve-assign@fb.com (x_refsource_CONFIRM, Vendor Advisory)
cve-assign@fb.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2019-11930?: CVE-2019-11930 is a critical-severity vulnerability in Facebook Hhvm, classified under Release of Invalid Pointer or Reference. CVSS score: 9.8/10. Published 2019-12-04.
How severe is CVE-2019-11930?: Critical severity. CVSS v3 base score is 9.8 out of 10.