CVE-2026-21972 is a vulnerability identified in Oracle Configurator, a component of Oracle E-Business Suite used for product configuration and user interface management. The affected versions range from 12.2.3 through 12.2.15. The flaw allows an unauthenticated attacker with network access over HTTP to exploit the vulnerability without any user interaction or privileges. The attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The vulnerability results in unauthorized read access to a subset of data accessible through Oracle Configurator, impacting confidentiality but not integrity or availability. The CVSS 3.1 base score is 5.3, reflecting a medium severity level. No known exploits have been reported in the wild, but the ease of exploitation and lack of authentication requirements make it a notable risk. Oracle Configurator is often integrated into enterprise resource planning (ERP) workflows, meaning that exposed data could include sensitive configuration or business information. The vulnerability affects the User Interface component, which is typically exposed via HTTP, increasing the attack surface. Since no patches or mitigations are explicitly listed in the provided data, organizations must rely on network-level controls and monitoring until official patches are released. The vulnerability was published on January 20, 2026, with the CVE assigned shortly before that date.

For European organizations, the primary impact is unauthorized disclosure of sensitive configuration data managed by Oracle Configurator. This could lead to exposure of proprietary product configurations, business process details, or customer-related information, potentially resulting in competitive disadvantage or compliance violations under regulations like GDPR. Although the vulnerability does not allow modification or disruption of services, the confidentiality breach alone can have significant business repercussions. Organizations in sectors such as manufacturing, telecommunications, and finance that rely heavily on Oracle E-Business Suite for product configuration and order management are particularly at risk. The ease of exploitation without authentication increases the threat level, especially if Oracle Configurator interfaces are exposed to untrusted networks or the internet. The absence of known exploits in the wild suggests limited active exploitation currently, but the vulnerability’s characteristics warrant proactive defense. Additionally, the medium severity score indicates that while the impact is not critical, it is substantial enough to require timely remediation to prevent data leakage and potential follow-on attacks leveraging exposed information.

1. Apply official Oracle patches as soon as they become available for versions 12.2.3 through 12.2.15 of Oracle Configurator. 2. Restrict network access to Oracle Configurator interfaces by implementing network segmentation and firewall rules to limit HTTP access only to trusted internal users and systems. 3. Employ web application firewalls (WAFs) to detect and block suspicious HTTP requests targeting Oracle Configurator endpoints. 4. Conduct regular monitoring and logging of access to Oracle Configurator, focusing on unusual or unauthorized read attempts. 5. Review and harden Oracle E-Business Suite configurations to minimize exposed data and disable unnecessary services or interfaces. 6. Educate IT and security teams about this vulnerability to ensure rapid response and incident handling. 7. Consider deploying intrusion detection systems (IDS) with signatures tuned to detect exploitation attempts against Oracle Configurator. 8. If feasible, temporarily disable or isolate Oracle Configurator components exposed to untrusted networks until patches are applied. 9. Coordinate with Oracle support for guidance and early access to patches or workarounds. 10. Perform vulnerability scanning and penetration testing focused on Oracle Configurator to identify exposure and validate mitigations.