CVE-2020-4821 json
IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1, under certain configurations, could allow a us…
published 2021-07-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-26068
- cvss
- 5.9
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
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
Patch / fix
- ibm.com/support/pages/node/6472911 advisory
- ibm.com/support/pages/node/6472909 advisory
Exploit prediction
2.00% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 5.9 | CVSS:3.0/AC:H/A:N/C:H/S:U/AV:N/PR:N/UI:N/I:N/RL:O/RC:C/E:U |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- IBM InfoSphere Change Data Capture for z/OS
- IBM InfoSphere Data Replication
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
ibm.com
/support/pages/node/6472911
patch, vendor-advisory
-
ibm.com
/support/pages/node/6472909
patch, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/189834
vdb-entry, vendor-advisory
Sources
- CVE List CVE-2020-4821
- NVD CVE-2020-4821
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.