CVE-2026-83027: Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core)

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CRITICAL 9.3DOWNGRADE

CVE-2026-83027 is a critical-severity flaw (CVSS 9.3) affecting identity manager connector. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Oracle Identity Manager Connector executes to compromise Oracle Identity Manager Connector. While the vulnerability is

Why this priority

Critical severity

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

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-09-15
Last modified	2026-09-22

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-09-22 · 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
2026-09-22 19:09 UTCUpdated Record last modified

oracle identity manager connector DOWNGRADE

Affected: 12.2.1.4.0 · 14.1.2.1.0

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 identity-manager-connector || rpm -q identity-manager-connector || identity-manager-connector --version

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

apt-cache madison identity-manager-connector sudo apt install identity-manager-connector=<VERSION_BEFORE_12.2.1.4.0> sudo apt-mark hold identity-manager-connector

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

dnf --showduplicates list identity-manager-connector sudo dnf downgrade identity-manager-connector-<VERSION_BEFORE_12.2.1.4.0> sudo dnf versionlock add identity-manager-connector

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-2026-83027?

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

Is CVE-2026-83027 being exploited?

CVE-2026-83027 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-2026-83027 affect?

CVE-2026-83027 affects identity manager connector. Severity is critical (CVSS 9.3). Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated atta

How urgent is CVE-2026-83027?

Priority 40/100. Critical severity

Related CVEs

CVE-2026-34287 CRITICAL 9.1 DOWNGRADE Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core)
CVE-2026-34290 HIGH 7.5 DOWNGRADE Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core)
CVE-2026-34288 MEDIUM 5.9 DOWNGRADE Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core)
CVE-2026-34289 MEDIUM 5.9 DOWNGRADE Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core)
CVE-2026-34294 MEDIUM 5.9 DOWNGRADE Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Microso

References

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