CVE-2026-91489 Oracle Corporation CVE debrief

Who should care

Defenders and administrators of Oracle Identity Manager Connector versions 12.2.1.4.0 and 14.1.2.1.0 should assess exposure and prioritize patching to prevent potential data breaches and system compromise.

Why it matters

CVE-2026-91489 is a high-severity vulnerability in Oracle Identity Manager Connector that allows low-privileged attackers to compromise data integrity and confidentiality. Defenders should prioritize verifying exposure and applying patches, focusing on systems with Oracle Identity Manager Connector versions 12.2.1.4.0 and 14.1.2.1.0.

• Potential unauthorized data access and modification
• Compromise of Oracle Identity Manager Connector systems
• Integrity and confidentiality impacts due to low-privileged attacker access

Technical summary

The vulnerability in Oracle Identity Manager Connector's LDAP Gateway component (CVE-2026-91489) allows low-privileged attackers with logon access to compromise the system. Successful attacks can result in unauthorized creation, deletion, or modification access to critical data or all Oracle Identity Manager Connector accessible data, as well as unauthorized access to critical data or complete access to all Oracle Identity Manager Connector accessible data. The CVSS 3.1 Base Score is 7.1, indicating high severity due to confidentiality and integrity impacts.

Defensive priority

Defenders should prioritize verifying exposure and applying patches, focusing on systems with Oracle Identity Manager Connector versions 12.2.1.4.0 and 14.1.2.1.0.

Recommended defensive actions

• Verify and apply patches for Oracle Identity Manager Connector versions 12.2.1.4.0 and 14.1.2.1.0
• Restrict logon access to the infrastructure where Oracle Identity Manager Connector executes
• Monitor for unauthorized data modifications or access attempts
• Conduct a thorough review of system configurations to identify potential exposure
• Implement compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions and retest remediated assets to ensure effectiveness of patches
• Review relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, its impacts, and affected versions. However, specific exploitation instances or additional impact details are not provided. Defenders should verify exposure by reviewing system configurations, checking for affected versions (12.2.1.4.0 and 14.1.2.1.0), and assessing logon access controls. Evidence is limited to vendor-provided information, and further verification tasks are needed to confirm potential breaches.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.