CVE-2026-83415: High severity Oracle Oracle Coherence (Oracle Fusion Middleware - Core) vulnerability
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Restrict network access to Oracle Coherence Core over HTTP to trusted clients only (e.g., via firewall/ACL), since the vulnerability is reachable via HTTP with network access.
Event History
Frequently Asked Questions
Which deployments are affected?
Affected supported versions are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0 of Oracle Coherence in Oracle Fusion Middleware Core.
What access does an attacker need?
An attacker needs network access to the affected Oracle Coherence instance via HTTP and low-privileged access. No user interaction is required, but exploitation is rated difficult.
What is the potential impact of a successful attack?
A successful attack can result in takeover of Oracle Coherence, with high confidentiality, integrity, and availability impact.