CVE-2020-6851

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

5.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 92.4% of scored records. A rank, not a probability.

NVD base score

7.5 (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:H

NVD analysis status

Modified. NVD last modified this record on 2026-09-22.

Red Hat severity

Important. 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

2020-01-13 05:02Z6 YR AGO

Last updated

2026-09-22 17:07Z1 MO AGO

Reserved

2020-01-13

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-122Heap-based Buffer OverflowVariant

Data version

5.2

Document digest

edeb2c96add46bd9d579b1f5a0bf41d11036817128da78cd8eb8c2de0548c303

• lists.debian.org[debian-lts-announce] 20200128 [SECURITY] [DLA 2081-1] openjpeg2 security updatehttps://lists.debian.org/debian-lts-announce/2020/01/msg00025.htmlmailing-listx_refsource_MLIST
• access.redhat.comRHSA-2020:0262https://access.redhat.com/errata/RHSA-2020:0262vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2020:0274https://access.redhat.com/errata/RHSA-2020:0274vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2020:0296https://access.redhat.com/errata/RHSA-2020:0296vendor-advisoryx_refsource_REDHAT
• lists.fedoraproject.orgFEDORA-2020-ab8553f302https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XBRMI2D3XPVWKE3V52KRBW7BJVLS5LD3/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2020-6c8804daaahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LACIIDDCKZJEPKTTFILSOSBQL7L3FC6V/vendor-advisoryx_refsource_FEDORA
• lists.debian.org[debian-lts-announce] 20200710 [SECURITY] [DLA 2277-1] openjpeg2 security updatehttps://lists.debian.org/debian-lts-announce/2020/07/msg00008.htmlmailing-listx_refsource_MLIST
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2020.htmlx_refsource_MISC
• github.comhttps://github.com/uclouvain/openjpeg/issues/1228x_refsource_MISC
• www.debian.orgDSA-4882https://www.debian.org/security/2021/dsa-4882vendor-advisoryx_refsource_DEBIAN
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/09/22/6