# CVE-2026-9745: IBM Netezza Software S3 bucket ownership validation bypass

Source: https://junglewise.ai/threats/cve-2026-9745-ibm-netezza-software-s3-bucket-ownership-validation-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-03. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-9745 · Severity: medium · CVSS 6.5 · Published 2026-09-03

IBM Netezza Software fails to validate S3 bucket ownership when performing cloud storage operations, allowing an attacker to exploit naming collisions or misconfigurations to redirect requests to an attacker-controlled bucket. This could result in sensitive data being written to or read from the wrong cloud storage location, compromising data confidentiality and integrity.

Technologies: [IBM Netezza Software](https://junglewise.ai/threats/technologies/netezza-software), [IBM Netezza Performance Server](https://junglewise.ai/threats/technologies/netezza-performance-server). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-9745 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9745 being exploited in the wild.

**How severe is CVE-2026-9745?** Medium severity, with a CVSS score of 6.5, published 3 September 2026.

**Which products and versions are affected?** IBM Netezza Software 11.3.0.3 through Interim Fix 002.

**Is there a fix for CVE-2026-9745?** 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-2026-9745 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-9745?** Check whether you run IBM Netezza Software or IBM Netezza Performance Server 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 IBM Netezza Software versions 11.3.0.3 through Interim Fix 002, where S3 API operations omit validation of the ExpectedBucketOwner parameter. This allows an attacker to exploit bucket naming collisions or application misconfigurations to redirect requests to an unintended S3 bucket under their control. An attacker with network access can craft requests that take advantage of this missing validation. The flaw is fixed in version 11.3.1.3.

## Affected products

- IBM Netezza Software 11.3.0.3 through Interim Fix 002

## Timeline

- 2026-09-03: disclosed

## References

- [https://www.ibm.com/support/pages/node/7284359](https://www.ibm.com/support/pages/node/7284359)

## Related threats

- [IBM Netezza Software TLS certificate validation bypass](https://junglewise.ai/threats/cve-2026-9744-ibm-netezza-software-tls-certificate-validation-bypass)
- [IBM Netezza Software log injection via improper element neutralization](https://junglewise.ai/threats/cve-2026-9736-ibm-netezza-software-log-injection-via-improper-element)
- [IBM Netezza Software improper TLS certificate validation](https://junglewise.ai/threats/cve-2026-9036-ibm-netezza-software-improper-tls-certificate-validation)
- [IBM Netezza Software hardcoded credentials in registry](https://junglewise.ai/threats/cve-2026-8862-ibm-netezza-software-hardcoded-credentials-in-registry)