Executive brief
Oracle Coherence, a widely used data grid solution for high-speed data processing and storage, contains a critical security flaw. An unauthorized attacker can remotely take full control of the system over the network without needing any login credentials. This could lead to a complete loss of data confidentiality, unauthorized modification of information, and a total disruption of services.
Technical details
A critical vulnerability exists in the Core component of Oracle Coherence (versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0). The flaw is easily exploitable by an unauthenticated attacker with network access via TCP. Successful exploitation allows for a complete takeover of the Oracle Coherence instance, impacting confidentiality, integrity, and availability. While the specific vulnerability class (e.g., deserialization or injection) is not explicitly named in the advisory, the high CVSS score and 'takeover' description suggest a remote code execution or full authentication bypass capability. Users are advised to refer to the Oracle Critical Patch Update for July 2026 for remediation steps.
Affected products
- Oracle Coherence 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0
Timeline
- 2026-07-21: disclosed
- 2026-07-21: advisory