CVE-2026-83416: Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core)

Routine

MEDIUM 4.3DOWNGRADE

CVE-2026-83416 is a medium-severity flaw (CVSS 4.3) affecting coherence. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-400
Published	2026-09-15
Last modified	2026-09-21

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-09-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-15 20:18 UTCPublished CVE record published
2026-09-21 16:12 UTCUpdated Record last modified

oracle coherence DOWNGRADE

Affected: 12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0 · 15.1.1.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.2.1.4.0

1. Check installed version

apt-cache policy coherence || rpm -q coherence || coherence --version

2. No fixed release: DOWNGRADE to a release before 12.2.1.4.0 (Debian / Ubuntu)

apt-cache madison coherence sudo apt install coherence=<VERSION_BEFORE_12.2.1.4.0> sudo apt-mark hold coherence

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list coherence sudo dnf downgrade coherence-<VERSION_BEFORE_12.2.1.4.0> sudo dnf versionlock add coherence

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-83416?

coherence: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-83416 being exploited?

CVE-2026-83416 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-83416 affect?

CVE-2026-83416 affects coherence. Severity is medium (CVSS 4.3). 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. Easily exploitable vulnerability allows low privilege

How urgent is CVE-2026-83416?

Priority 23/100. No elevated risk signals yet.

Related CVEs

CVE-2026-35307 CRITICAL 10.0 DOWNGRADE Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core)
CVE-2026-35308 CRITICAL 10.0 DOWNGRADE Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Centralized Third Party
CVE-2026-35310 CRITICAL 9.8 DOWNGRADE Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core)
CVE-2026-35304 CRITICAL 9.8 DOWNGRADE Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core)
CVE-2026-35309 CRITICAL 9.8 DOWNGRADE Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Centralized Third Party

References

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