CVE-2021-20411

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

0.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 37.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-02-12 16:35Z5 YR AGO

Last updated

2024-09-16 19:47Z1 YR AGO

Reserved

2020-12-17

Assigning CNA

ibm

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-669Incorrect Resource Transfer Between SpheresClass

Data version

5.1

Document digest

bc8cf2f9eeea6d3f24e4f62cf639d87735514f3aaaa0781e624305cb967bc9d2

• www.ibm.comhttps://www.ibm.com/support/pages/node/6414777x_refsource_CONFIRM
• exchange.xforce.ibmcloud.comibm-sviq-cve202120411-session-fixation (196191)https://exchange.xforce.ibmcloud.com/vulnerabilities/196191vdb-entryx_refsource_XF