PatchSiren cyber security CVE debrief

CVE-2026-5515 IBM CVE debrief

IBM App Connect Enterprise versions 13.0.1.0 through 13.0.7.0 stores potentially sensitive information in log files that could be read by a local user. This vulnerability represents an information disclosure risk where authenticated local users with appropriate file system permissions could access sensitive data written to application logs. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) indicates a local attack vector requiring low attack complexity and low privileges, with high impact to confidentiality but no impact to integrity or availability. The vulnerability was published to the NVD on May 27, 2026, and remains under analysis as of that date. IBM has published a security bulletin with remediation guidance.

Vendor: IBM
Product: App Connect Enterprise
CVSS: MEDIUM 5.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-05-27
Original CVE updated: 2026-05-27
Advisory published: 2026-05-27
Advisory updated: 2026-05-27

Who should care

Organizations running IBM App Connect Enterprise versions 13.0.1.0 through 13.0.7.0, particularly those in multi-user environments or with compliance requirements for sensitive data handling in application logs. System administrators responsible for IBM middleware security and log management practices should prioritize review.

Technical summary

IBM App Connect Enterprise 13.0.1.0 through 13.0.7.0 writes potentially sensitive information to log files without adequate access controls, allowing local users with file system read permissions to obtain confidential data. The vulnerability is classified as medium severity (CVSS 5.5) with high confidentiality impact. No integrity or availability impacts are associated with this issue.

Defensive priority

medium

Recommended defensive actions

Review IBM security bulletin for available patches or configuration guidance
Audit log file permissions on IBM App Connect Enterprise systems to restrict access to authorized administrative accounts only
Implement log rotation and secure log storage practices to minimize exposure window of potentially sensitive data
Monitor for unauthorized access attempts to application log directories
Upgrade to a fixed version when available per IBM guidance

Evidence notes

CVE published 2026-05-27; NVD status 'Undergoing Analysis'; IBM PSIRT reference confirms vendor acknowledgment.

Official resources

IBM App Connect Enterprise 13.0.1.0 through 13.0.7.0 stores potentially sensitive information in log files that could be read by a local user.