Is CVE-2026-35309 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-35309 being exploited in the wild.

How severe is CVE-2026-35309?

Critical severity, with a CVSS score of 9.8, published 17 June 2026.

Which products and versions are affected?

Oracle Coherence 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0.

Is there a fix for CVE-2026-35309?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-35309 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-35309?

Check whether you run Oracle Coherence at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-35309: Oracle Coherence improper access control in Centralized Third Party Jars

CVE-2026-35309 · Severity: critical · CVSS 9.8 · Published 2026-06-17

Oracle Coherence, a data grid solution used for high-speed data processing and storage, contains a critical security flaw. An unauthorized person can remotely take full control of the system over the network without needing any login credentials. This could lead to a total loss of data confidentiality, system integrity, and service availability.

Technologies: Oracle Coherence. Vendors: Oracle.

Quick answers

Is CVE-2026-35309 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-35309 being exploited in the wild.
How severe is CVE-2026-35309?: Critical severity, with a CVSS score of 9.8, published 17 June 2026.
Which products and versions are affected?: Oracle Coherence 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0.
Is there a fix for CVE-2026-35309?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-35309 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-35309?: Check whether you run Oracle Coherence at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is classified as Improper Access Control (CWE-284) within the Centralized Third Party Jars component of Oracle Coherence. It is remotely exploitable via HTTP without authentication (PR:N) and requires no user interaction (UI:N). An attacker can leverage this flaw to achieve a complete takeover of the Oracle Coherence instance, impacting 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 for June 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

2026-06-17: disclosed
2026-06-17: advisory: Oracle June 2026 Critical Patch Update released

References

https://www.oracle.com/security-alerts/cspujun2026.html

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