CVE-2019-20398

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

1.81% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 78.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2020-01-22 00:00Z6 YR AGO

Last updated

2024-08-05 02:39Z2 YR AGO

Reserved

2020-01-22

Assigning CNA

mitre

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

cdc9ebef4b7cdee955179eac0b203b8a431481176428d7a8922af54f9f4ac234

• github.comhttps://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
• github.comhttps://github.com/CESNET/libyang/commit/7852b272ef77f8098c35deea6c6f09cb78176f08
• github.comhttps://github.com/CESNET/libyang/issues/773
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1793935
• lists.debian.org[debian-lts-announce] 20230919 [SECURITY] [DLA 3572-1] libyang security updatehttps://lists.debian.org/debian-lts-announce/2023/09/msg00019.htmlmailing-list