# CVE-2025-36336: IBM watsonx.data intelligence cleartext transmission of sensitive information

Source: https://junglewise.ai/threats/cve-2025-36336-ibm-watsonx-data-intelligence-cleartext-transmission-of-sensitive  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-30. Updated: 2026-06-30  
License: CC BY 4.0 with a link back

CVE-2025-36336 · Severity: medium · CVSS 5.9 · Published 2026-06-30

IBM watsonx.data intelligence, a platform used for data management and AI analytics, is affected by a security flaw where sensitive information is transmitted without encryption. An attacker positioned on the same network could intercept this traffic to steal confidential data. This could lead to the exposure of business-critical information or credentials.

Technologies: [IBM Watsonx.Data Intelligence](https://junglewise.ai/threats/technologies/watsonx-data-intelligence). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2025-36336 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-36336 being exploited in the wild.

**How severe is CVE-2025-36336?** Medium severity, with a CVSS score of 5.9, published 30 June 2026.

**Which products and versions are affected?** IBM Watsonx.Data Intelligence 5.2.0, 5.2.1, 5.2.2, 5.3.0.

**Is there a fix for CVE-2025-36336?** A patch was published on 2026-06-30: Vulnerability addressed in version 5.3.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-36336 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2025-36336?** Check whether you run IBM Watsonx.Data Intelligence 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

IBM watsonx.data intelligence versions 5.2.0 through 5.3.0 are vulnerable to cleartext transmission of sensitive information (CWE-319). The application fails to encrypt data during transit, which can be exploited by a remote attacker using man-in-the-middle (MITM) techniques. While the attack requires the adversary to be positioned appropriately to intercept network traffic (High Attack Complexity), no authentication or user interaction is required to capture the data. IBM has addressed this vulnerability in Watson Data Intelligence version 5.3.1.

## Affected products

- IBM watsonx.data intelligence 5.2.0, 5.2.1, 5.2.2, 5.3.0

## Timeline

- 2026-06-30: advisory: IBM published the security bulletin and NVD record.
- 2026-06-30: patched: Vulnerability addressed in version 5.3.1.

## References

- [https://www.ibm.com/support/pages/node/7277801](https://www.ibm.com/support/pages/node/7277801)

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