CVE-2020-12390

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

1.62% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 75.9% 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

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2020-05-26 17:03Z6 YR AGO

Last updated

2024-08-04 11:56Z2 YR AGO

Reserved

2020-04-28

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-502Deserialization of Untrusted DataBase

Data version

5.1

Document digest

d3ee413d5a508d9be1cc8ce8b6e6b5c07430afc1080f02b5ae7b050c916a4b6e

• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-16/x_refsource_MISC
• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1141959x_refsource_MISC