CVE-2025-27550: IBM Jazz Reporting Service Disclosure Flaw

CVE-2025-27550 Overview

IBM Jazz Reporting Service contains an information disclosure vulnerability that could allow an authenticated user on the host network to obtain sensitive information about other projects that reside on the server. This vulnerability is classified under CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere), indicating that the application inadvertently exposes internal project data to users who should not have access to it.

Critical Impact

Authenticated users on the adjacent network can access sensitive project information belonging to other projects, potentially exposing confidential business data, project configurations, or proprietary information.

Affected Products

• IBM Jazz Reporting Service

Discovery Timeline

• 2026-02-04 - CVE CVE-2025-27550 published to NVD
• 2026-02-05 - Last updated in NVD database

Technical Details for CVE-2025-27550

Vulnerability Analysis

This information disclosure vulnerability in IBM Jazz Reporting Service stems from improper access control mechanisms that fail to adequately isolate project data between authenticated users. The vulnerability requires the attacker to be on the adjacent network (not remotely exploitable over the internet) and to possess valid authentication credentials. Once these conditions are met, the attacker can leverage the weakness to enumerate and access sensitive information from projects they are not authorized to view.

The attack complexity is low, meaning no special conditions or circumstances need to align for exploitation. The vulnerability affects only confidentiality with low impact—no integrity or availability concerns are present. This indicates the flaw allows read-only access to unauthorized data without the ability to modify or delete information.

Root Cause

The root cause of this vulnerability is inadequate authorization checks within IBM Jazz Reporting Service when handling requests for project data. The application fails to properly validate whether an authenticated user has the appropriate permissions to access information from a specific project before returning that data. This represents a classic broken access control scenario where authentication is enforced but authorization boundaries between projects are not properly maintained.

Attack Vector

The attack vector requires adjacent network access, meaning the attacker must be on the same network segment as the Jazz Reporting Service server. This limits the exposure compared to internet-facing vulnerabilities but still poses significant risk in enterprise environments where multiple users share network infrastructure.

An attacker would first authenticate to the Jazz Reporting Service using valid credentials. Once authenticated, they could craft requests or navigate the application in ways that expose project data from other projects on the server. The specific exploitation mechanism involves accessing reporting endpoints or data retrieval functions that do not properly scope queries to the user's authorized projects.

For technical details and specific exploitation scenarios, refer to the IBM Support Article which provides comprehensive information about the vulnerability scope and affected configurations.

Detection Methods for CVE-2025-27550

Indicators of Compromise

• Unusual cross-project data access patterns in Jazz Reporting Service audit logs
• Authenticated users querying or accessing reports from projects they are not members of
• Increased data retrieval requests from single user accounts across multiple projects
• Access log entries showing project enumeration behavior

Detection Strategies

• Enable comprehensive audit logging for all data access operations within Jazz Reporting Service
• Implement monitoring rules to detect when users access project data outside their assigned project scope
• Review access control lists and user-project assignments periodically to identify anomalies
• Configure alerts for unusual query patterns that span multiple projects from single sessions

Monitoring Recommendations

• Monitor Jazz Reporting Service application logs for unauthorized project access attempts
• Implement network segmentation monitoring to track adjacent network access patterns
• Set up alerting for authentication events followed by cross-project data requests
• Regularly audit user permissions and project membership to ensure principle of least privilege

How to Mitigate CVE-2025-27550

Immediate Actions Required

• Review and apply the security update from IBM as documented in the IBM Support Article
• Audit current user access permissions and remove unnecessary project memberships
• Implement network segmentation to limit adjacent network access to authorized systems only
• Enable detailed logging to monitor for potential exploitation attempts

Patch Information

IBM has released security guidance for this vulnerability. Administrators should consult the IBM Support Article for detailed patch information, affected version lists, and upgrade instructions. Apply the recommended security updates as soon as possible to address this information disclosure vulnerability.

Workarounds

• Restrict network access to Jazz Reporting Service to only authorized workstations and servers
• Implement additional authentication layers such as VPN requirements for accessing the service
• Review and tighten project-level access controls to minimize exposure of sensitive project data
• Consider implementing application-layer firewalls or access proxies to add authorization checks
• Segment Jazz Reporting Service onto isolated network segments with strict access controls