CVE-2021-20405

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

0.78% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 53.5% 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:H/A:N

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

2021-02-11 16:30Z5 YR AGO

Last updated

2024-09-16 20:26Z1 YR AGO

Reserved

2020-12-17

Assigning CNA

ibm

Record state

PUBLISHED

Severity

Low (CVSS 3.1)

CNA CVSS vector

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

Weaknesses

• CWE-116Improper Encoding or Escaping of OutputClass

Data version

5.1

Document digest

54bbcebeb92ae33302f3da5f246a5daeec6b3e826061843636319c0e001f9d5b

• www.ibm.comhttps://www.ibm.com/support/pages/node/6414367x_refsource_CONFIRM
• exchange.xforce.ibmcloud.comibm-sviq-cve202120405-gain-access (196183)https://exchange.xforce.ibmcloud.com/vulnerabilities/196183vdb-entryx_refsource_XF