CVE-2021-20589

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

1.48% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 72.1% 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 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2021-05-19 10:28Z5 YR AGO

Last updated

2024-08-03 17:45Z2 YR AGO

Reserved

2020-12-17

Assigning CNA

Mitsubishi

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

53610d3659456be99e248b95c40c919faf078f03832419d1ddf8b7afc391e2a4

• www.mitsubishielectric.comhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-002_en.pdfx_refsource_MISC
• jvn.jphttps://jvn.jp/vu/JVNVU99895108/index.htmlx_refsource_MISC