CVE-2026-83412 Oracle Corporation CVE debrief

Who should care

Oracle Coherence administrators, security teams, and IT professionals responsible for Oracle Fusion Middleware deployments should assess their exposure and take necessary actions to mitigate the vulnerability.

Why it matters

CVE-2026-83412 is a high-severity vulnerability in Oracle Coherence that allows low-privileged attackers to compromise data integrity and confidentiality. Oracle Coherence administrators and security teams should assess exposure, especially for versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0, and apply patches or mitigations as recommended by Oracle. The vulnerability's impacts include potential unauthorized data access or modification, compromising data integrity and confidentiality. Verification of instance exposure and version assessment are crucial.

• Potential unauthorized data access or modification.
• Compromise of data integrity and confidentiality.
• Need for patching or mitigation to prevent exploitation.
• Verification of Oracle Coherence instance exposure and version assessment.

Technical summary

The vulnerability in Oracle Coherence, a component of Oracle Fusion Middleware, allows low-privileged attackers with network access via TCP to compromise the product. Successful attacks can result in unauthorized creation, deletion, or modification access to critical data or all Oracle Coherence accessible data, as well as unauthorized access to critical data or complete access to all Oracle Coherence accessible data. The CVSS 3.1 Base Score is 8.1, indicating high severity due to confidentiality and integrity impacts.

Defensive priority

High priority for Oracle Coherence administrators and security teams to assess exposure and apply patches or mitigations.

Recommended defensive actions

• Assess exposure of Oracle Coherence instances, especially versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0.
• Apply patches or mitigations as recommended by Oracle.
• Monitor network access and privileges for potential abuse.
• Review and update incident response plans to address potential data integrity and confidentiality impacts.
• Perform vulnerability scanning to identify exposed instances.
• Implement compensating controls for exposed systems while remediation is scheduled and verified.
• Track exceptions and retest remediated assets.

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, its impacts, and affected versions. Oracle's security alert page may offer additional guidance. The vulnerability's impacts include potential unauthorized data access or modification, compromising data integrity and confidentiality. Verification of instance exposure and version assessment are crucial. The CVE record was published on 2026-09-15T20:18:49.583Z and has not been modified since then. The NVD entry is currently Undergoing Analysis. There is limited

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.