CVE-2020-4821

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

2.00% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 79.0% 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

2021-07-16 16:50Z5 YR AGO

Last updated

2024-09-17 00:11Z1 YR AGO

Reserved

2019-12-30

Assigning CNA

ibm

Record state

PUBLISHED

Severity

Medium (CVSS 5.9)

CNA CVSS vector

CVSS:3.0/AC:H/A:N/C:H/S:U/AV:N/PR:N/UI:N/I:N/RL:O/RC:C/E:U

Weaknesses

• CWE-287Improper AuthenticationClass

Data version

5.1

Document digest

2d23edf2690bf49be796f30c5257384ec1b88d21cf6b30c7aa59478b077b0783

• www.ibm.comhttps://www.ibm.com/support/pages/node/6472911x_refsource_CONFIRM
• www.ibm.comhttps://www.ibm.com/support/pages/node/6472909x_refsource_CONFIRM
• exchange.xforce.ibmcloud.comibm-cognos-cve20204821-sec-bypass (189834)https://exchange.xforce.ibmcloud.com/vulnerabilities/189834vdb-entryx_refsource_XF