CVE-2020-4821

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1, under certain configurations, could allow a user to bypass authentication mechanisms using an empty password string. IBM X-Force ID: 189834

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-287

Affected software

Vendor	Product	Versions
IBM	InfoSphere Change Data Capture for z/OS	10.2.1
IBM	InfoSphere Data Replication	11.4

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/189834VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6472909Patch, Vendor Advisory
https://www.ibm.com/support/pages/node/6472911Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/189834VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6472909Patch, Vendor Advisory
https://www.ibm.com/support/pages/node/6472911Patch, Vendor Advisory

Timeline

Published: Jul 16, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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