CVE-2020-12399

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

0.65% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 50.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

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

2020-07-09 14:52Z6 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-203Observable DiscrepancyBase
• CWE-327Use of a Broken or Risky Cryptographic AlgorithmClass

Data version

5.1

Document digest

d44ff6fa4ebd91631e33fdf4d9dcf82e24bfff8e0ad9b5499cf2056bd19ad53e

• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-20/x_refsource_MISC
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-21/x_refsource_MISC
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-22/x_refsource_MISC
• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1631576x_refsource_MISC
• www.debian.orgDSA-4726https://www.debian.org/security/2020/dsa-4726vendor-advisoryx_refsource_DEBIAN
• usn.ubuntu.comUSN-4421-1https://usn.ubuntu.com/4421-1/vendor-advisoryx_refsource_UBUNTU
• security.gentoo.orgGLSA-202007-49https://security.gentoo.org/glsa/202007-49vendor-advisoryx_refsource_GENTOO
• lists.debian.org[debian-lts-announce] 20200929 [SECURITY] [DLA 2388-1] nss security updatehttps://lists.debian.org/debian-lts-announce/2020/09/msg00029.htmlmailing-listx_refsource_MLIST