CVE-2019-3557

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 76.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-01-15 22:00Z7 YR AGO

Last updated

2024-08-04 19:12Z2 YR AGO

Reserved

2019-01-02

Assigning CNA

facebook

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

636c19e5d02ef1d8e97e22f21621ac55e63496c0e0c31f1355c172c3143f3f01

• hhvm.comhttps://hhvm.com/blog/2019/01/14/hhvm-3.30.2.htmlx_refsource_MISC
• github.comhttps://github.com/facebook/hhvm/commit/6e4dd9ec3f14b48170fc45dc9d13a3261765f994x_refsource_MISC