Quick answers
- Is CVE-2026-84421 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84421 being exploited in the wild.
- How severe is CVE-2026-84421?
- High severity, with a CVSS score of 8.8, published 29 September 2026.
- Which products and versions are affected?
- IBM Datastage On Cloud Pak For Data 5.4.0.0.
- Is there a fix for CVE-2026-84421?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-84421 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-84421?
- Check whether you run IBM Datastage On Cloud Pak For Data at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability exists in DataStage's archive extraction functionality, which fails to properly validate file paths, enabling a path traversal attack. An authenticated network attacker with low privileges can exploit this to execute arbitrary code with high impact on confidentiality, integrity, and availability. A fix is expected from IBM.
Affected products
- IBM DataStage on Cloud Pak for Data 5.4.0.0
Timeline
- 2026-09-29: disclosed