Executive brief
Oracle Coherence, a data grid solution used for high-speed data processing and application scaling, is vulnerable to a denial-of-service attack. An attacker with basic user credentials can remotely cause the system to hang or crash repeatedly. This can lead to significant service outages and prevent applications from accessing critical cached data.
Technical details
A vulnerability in the Core component of Oracle Coherence allows a low-privileged attacker with network access via TCP to compromise the system. The flaw is categorized as easily exploitable and specifically impacts availability. Successful exploitation allows an attacker to cause a frequently repeatable crash or a complete hang of the Oracle Coherence service, resulting in a total denial of service. 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 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