CVE-2021-20565

Name: CVE-2021-20565
Creator: NVD / NIST
Published: 2021-05-14T17:15:07.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.84%

Last modified Jun 17, 2026

CVE-2021-20565 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. IBM Cloud Pak for Security (CP4S) 1.4.0.0, 1.5.0.0, 1.5.0.1, 1.6.0.0, and 1.6.0.1 uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism. IBM X-Force ID: 199236.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

IBM Cloud Pak for Security (CP4S) 1.4.0.0, 1.5.0.0, 1.5.0.1, 1.6.0.0, and 1.6.0.1 uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism. IBM X-Force ID: 199236.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.84%

53.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Ibm	Cloud Pak For Security	1.4.0.0
Ibm	Cloud Pak For Security	1.5.0.0
Ibm	Cloud Pak For Security	1.5.0.1
Ibm	Cloud Pak For Security	1.6.0.0
Ibm	Cloud Pak For Security	1.6.0.1

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/199236VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6453115Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/199236VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6453115Vendor Advisory

Timeline

Published: May 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20565?

How severe is CVE-2021-20565?

CVE-2021-20565 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20565?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20565?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST