CVE-2021-20296

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

1.74% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 77.3% of scored records. A rank, not a probability.

NVD base score

5.3 (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:N/I:N/A:L

NVD analysis status

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

Red Hat severity

Low. 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

2021-04-01 00:00Z5 YR AGO

Last updated

2024-08-03 17:37Z2 YR AGO

Reserved

2020-12-17

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

4ec384dff7faba728bc7e7ce627b89a901ad4dc5923e6a9e1ec927781bc193b3

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1939141
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24854
• lists.debian.org[debian-lts-announce] 20210703 [SECURITY] [DLA 2701-1] openexr security updatehttps://lists.debian.org/debian-lts-announce/2021/07/msg00001.htmlmailing-list
• security.gentoo.orgGLSA-202107-27https://security.gentoo.org/glsa/202107-27vendor-advisory
• lists.debian.org[debian-lts-announce] 20221211 [SECURITY] [DLA 3236-1] openexr security updatehttps://lists.debian.org/debian-lts-announce/2022/12/msg00022.htmlmailing-list