Improper authentication in IBM InfoSphere Change Data Capture for z/OS
Priority MEDIUM 46CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
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
Why it matters now
EPSS 0.02002 80th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | InfoSphere Change Data Capture for z/OS | 10.2.1 | — | No fix listed | CNA |
| IBM | InfoSphere Data Replication | 11.4 | — | No fix listed | CNA |
- InfoSphere Change Data Capture for z/OS VendorIBM Affected 10.2.1 Fixed in — No fix listed CNA
- InfoSphere Data Replication VendorIBM Affected 11.4 Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:infosphere_data_replication:11.4:*:*:*:*:*:*:* | 11.4 | Vulnerable | IBM |
| cpe:2.3:a:ibm:infosphere_data_replication:11.4.0:*:*:*:*:*:*:* | 11.4.0 | Vulnerable | IBM |
| cpe:2.3:a:ibm:infosphere_change_data_capture:10.2.1:*:*:*:*:z\/os:*:* | 10.2.1 | Vulnerable | IBM |
| cpe:2.3:a:ibm:infosphere_change_data_capture:11.3.3:*:*:*:*:z\/os:*:* | 11.3.3 | Vulnerable | IBM |
| cpe:2.3:a:ibm:infosphere_change_data_capture:11.4:*:*:*:*:z\/os:*:* | 11.4 | Vulnerable | IBM |
- cpe:2.3:a:ibm:infosphere_data_replication:11.4:*:*:*:*:*:*:* Versions 11.4 Vulnerable ·IBM
- cpe:2.3:a:ibm:infosphere_data_replication:11.4.0:*:*:*:*:*:*:* Versions 11.4.0 Vulnerable ·IBM
- cpe:2.3:a:ibm:infosphere_change_data_capture:10.2.1:*:*:*:*:z\/os:*:* Versions 10.2.1 Vulnerable ·IBM
- cpe:2.3:a:ibm:infosphere_change_data_capture:11.3.3:*:*:*:*:z\/os:*:* Versions 11.3.3 Vulnerable ·IBM
- cpe:2.3:a:ibm:infosphere_change_data_capture:11.4:*:*:*:*:z\/os:*:* Versions 11.4 Vulnerable ·IBM
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-4821
- 2026-10-03 Alias added: GHSA-gg8g-78jx-gxgc
References
Sources
- CVE-2020-4821 · CVE Program
- CVE-2020-4821 · NVD
- FIRST EPSS
- GHSA-gg8g-78jx-gxgc · GitHub Advisory Database · CC BY 4.0
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