Quick answers
- Is CVE-2025-36221 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-36221 being exploited in the wild.
- How severe is CVE-2025-36221?
- Medium severity, with a CVSS score of 5.3, published 26 May 2026.
- Which products and versions are affected?
- IBM Cloud Pak for Data System 11.3.0.2 through 11.3.0.2-IF2.
- Is there a fix for CVE-2025-36221?
- 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-2025-36221 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2025-36221?
- Check whether you run IBM Cloud Pak for Data System 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 Cloud Pak for Data System (Cyclops) versions 11.3.0.2 through 11.3.0.2-IF2 are vulnerable to authentication bypass due to the use of default credentials (CWE-1392). These passwords, intended for manufacturing and installation processes, may remain active and accessible over the network. A remote, unauthenticated attacker can exploit this by using the known default credentials to gain access to the system. The vulnerability is addressed in version 11.3.1.1. According to the CVSS vector, the primary impact is on system integrity.
Affected products
- IBM Cloud Pak for Data System - Cyclops 11.3.0.2 through 11.3.0.2-IF2
Timeline
- 2026-05-25: advisory: Initial publication by IBM
- 2026-05-26: disclosed: NVD publication date