CVE-2020-21991

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

2.91% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 85.8% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/I:H/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

2021-04-28 13:58Z5 YR AGO

Last updated

2024-08-04 14:30Z2 YR AGO

Reserved

2020-08-13

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-287Improper AuthenticationClass

Data version

5.1

Document digest

02e053e8ac0b3b54c433404af2e03c5cf2b296baca3d229c37c59c499742f185

• www.zeroscience.mkhttps://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5549.phpx_refsource_MISC
• www.exploit-db.comExploit Databasehttps://www.exploit-db.com/exploits/47822exploitx_refsource_EXPLOIT-DB