CVE-2021-20479

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-05-09 · updated 2026-06-17
Weakness: CWE-327

Description

IBM Cloud Pak System 2.3.0 through 2.3.3.3 Interim Fix 1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 197498.

Affected products

IBM Cloud Pak System: from 2.3.0.0 before 2.3.3.4 — fixed in 2.3.3.4

How to fix

Upgrade to a fixed version: IBM Cloud Pak System 2.3.3.4. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/197498
https://www.ibm.com/support/pages/node/6562263
https://exchange.xforce.ibmcloud.com/vulnerabilities/197498
https://www.ibm.com/support/pages/node/6562263

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