How severe is CVE-2026-35309?

CVE-2026-35309 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-35309 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35309?

CVE-2026-35309 primarily affects Oracle Coherence. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-35309?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-35309 have an EU (EUVD) identifier?

Yes. CVE-2026-35309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37435.

When was CVE-2026-35309 published?

CVE-2026-35309 was published on 2026-06-17 and last updated on 2026-06-19.

CVE-2026-35309

CVE-2026-35309 is a critical-severity vulnerability in Oracle Coherence with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-37435
Weakness: CWE-284
Affected product: Oracle Coherence
Published: 2026-06-17
Last modified: 2026-06-19

Description

Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Centralized Third Party Jars). 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. Easily exploitable vulnerability allows unauthenticated 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 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Frequently asked questions

What is CVE-2026-35309?: Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Centralized Third Party Jars). 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. Easily exploitable vulnerability allows unauthenticated 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 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How severe is CVE-2026-35309?: CVE-2026-35309 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-35309 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35309?: CVE-2026-35309 primarily affects Oracle Coherence. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-35309?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-35309 have an EU (EUVD) identifier?: Yes. CVE-2026-35309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37435.
When was CVE-2026-35309 published?: CVE-2026-35309 was published on 2026-06-17 and last updated on 2026-06-19.

References

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

Affected products (4)

cpe:2.3:a:oracle:coherence:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:coherence:14.1.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:coherence:14.1.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:coherence:15.1.1.0.0:*:*:*:*:*:*:*

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