CVE-2020-1900

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

1.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 71.9% 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:3.1/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

2021-03-11 00:55Z5 YR AGO

Last updated

2024-08-04 06:54Z2 YR AGO

Reserved

2019-12-02

Assigning CNA

facebook

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

3aa906e8fcef48c0f509a5aa3f8075be6e27973f6bb5e1e40c8d60e5e63f8b54

• hhvm.comhttps://hhvm.com/blog/2020/06/30/security-update.htmlx_refsource_CONFIRM
• github.comhttps://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3x_refsource_MISC