EUVD-2026-79394
GHSA-h89f-r8g9-cx4w
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states easily exploitable, unauthenticated, network-reachable via T3/IIOP with full takeover of OID, giving PR:N/AC:L and C:H/I:H/A:H; impact stays within the component so S:U.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
3DescriptionCVE.org
Vulnerability in the Oracle Internet Directory product of Oracle Fusion Middleware (component: OID LDAP Server). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle Internet Directory. Successful attacks of this vulnerability can result in takeover of Oracle Internet Directory. 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).
AnalysisAI
Unauthenticated remote attackers can achieve full takeover of Oracle Internet Directory 12.2.1.4.0 and 14.1.2.1.0 by reaching the OID LDAP Server through its exposed T3 or IIOP remoting listeners, requiring no credentials and no user interaction (CVSS 3.1 base score 9.8; AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The root cause is an authentication-bypass condition (CWE-287) in the Fusion Middleware OID LDAP Server component, and successful exploitation yields complete loss of confidentiality, integrity and availability across the directory service. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitable remotely and pre-authentication (AV:N/PR:N/UI:N) against Oracle Internet Directory 12.2.1.4.0 and 14.1.2.1.0 where the OID LDAP Server is reachable over the network via the T3 and/or IIOP protocols. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | All signals point to a genuine top-priority vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch status: Patch available per vendor advisory - Oracle published this issue through its Fusion Middleware security alert (https://www.oracle.com/security-alerts/cspusep2026.html); the provided data does not include an exact fixed build number, so confirm the specific patched release for 12.2.1.4.0 and 14.1.2.1.0 in that advisory and apply it via the standard Oracle Critical Patch Update process for Fusion Middleware/WebLogic, then restart the affected domain. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Oracle Internet Directory 12.2.1.4.0 and 14.1.2.1.0 instances, identify any T3 or IIOP listeners exposed beyond trusted management networks, and block external access via firewall rules or network ACLs; if the remoting listeners are not strictly required, disable them. …
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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