Executive brief
Oracle Coherence, a distributed data grid solution used for high-speed data processing and application scaling, contains a critical security flaw. An unauthenticated attacker can remotely access the system over the network to gain full control of the environment. This could lead to the theft of sensitive data, disruption of business operations, and total compromise of the affected infrastructure.
Technical details
A critical vulnerability exists in the Core component of Oracle Coherence (Fusion Middleware). The flaw is easily exploitable by an unauthenticated attacker with network access via TCP. While the specific vulnerability class (e.g., deserialization or protocol flaw) is not explicitly named in the advisory, the impact allows for a complete takeover of the Oracle Coherence instance, affecting confidentiality, integrity, and availability. The vulnerability affects versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. Users are advised to refer to the Oracle Critical Patch Update (CPU) 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