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CVE-2026-35309 Oracle Corporation CVE debrief

A critical vulnerability was discovered in Oracle Coherence, a product of Oracle Fusion Middleware. The vulnerability is classified under CVE-2026-35309 and affects versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. It allows unauthenticated attackers with network access via HTTP to compromise Oracle Coherence, potentially leading to a takeover of the system. The CVSS 3.1 Base Score is 9.8, indicating a high impact on confidentiality, integrity, and availability. Organizations should prioritize patching this vulnerability to prevent potential system compromise.

Vendor
Oracle Corporation
Product
Oracle Coherence
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-19
Advisory published
2026-06-17
Advisory updated
2026-06-19

Who should care

Organizations using Oracle Coherence versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0 should prioritize patching this vulnerability to prevent potential system compromise. Security teams and vulnerability management teams should be aware of the potential impact of this vulnerability and take steps to mitigate it. IT teams responsible for Oracle Coherence deployments should review and implement the recommended actions to prevent exploitation.

Technical summary

The vulnerability is located in the Centralized Third Party Jars component of Oracle Coherence. It can be exploited easily by unauthenticated attackers with network access via HTTP. Successful exploitation can lead to a complete takeover of Oracle Coherence. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, reflecting a high severity. This vulnerability affects Oracle Coherence versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0.

Defensive priority

High

Recommended defensive actions

  • Apply the patches provided by Oracle Corporation as soon as possible.
  • Restrict network access to Oracle Coherence to only trusted users.
  • Monitor Oracle Coherence systems for any suspicious activity.
  • Consider implementing additional security controls, such as Web Application Firewalls (WAFs), to detect and prevent exploitation attempts.
  • Review and update incident response plans to include procedures for responding to potential exploitation of this vulnerability.
  • Conduct a thorough review of system logs to detect any potential exploitation attempts.
  • Implement a vulnerability management process to ensure timely patching of vulnerable systems.

Evidence notes

The CVE record was published on 2026-06-17T10:40:23.040Z and was last modified on 2026-06-19T06:17:02.850Z. The NVD entry is currently Analyzed. This vulnerability affects 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 CVSS 3.1 Base Score is 9.8, indicating a high impact on confidentiality, integrity, and availability. The vulnerability is located in the Centralized Third Party Jars component of Oracle Coherence. It can be exploited easily by unauthenticated attackers with network access via HTTP. Successful exploitation can lead to a complete takeover of Oracle Coherence.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-35309 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-35309

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-35309 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-35309

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.