CVE-2020-4926

Severity: critical (CVSS 9.1 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: 2022-05-24 · updated 2026-06-17
Weakness: CWE-862

Description

A vulnerability in the Spectrum Scale 5.1 core component and IBM Elastic Storage System 6.1 could allow unauthorized access to user data or injection of arbitrary data in the communication protocol. IBM X-Force ID: 191600.

Affected products

IBM Elastic Storage System: before 6.1.3.0 — fixed in 6.1.3.0
IBM Spectrum Scale: before 5.1.3.0 — fixed in 5.1.3.0

How to fix

Upgrade to a fixed version: IBM Elastic Storage System 6.1.3.0; IBM Spectrum Scale 5.1.3.0. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/191600
https://www.ibm.com/support/pages/node/6565399
https://www.ibm.com/support/pages/node/6589109
https://exchange.xforce.ibmcloud.com/vulnerabilities/191600
https://www.ibm.com/support/pages/node/6565399
https://www.ibm.com/support/pages/node/6589109

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