EUVD-2026-79390
GHSA-hc3m-j94p-85jf
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Oracle describes an easily exploitable, unauthenticated network LDAP attack yielding full takeover, supporting AV:N/AC:L/PR:N/UI:N and C:H/I:H/A:H; no cross-component scope change 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 LDAP 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
Authentication bypass in Oracle Internet Directory 12.2.1.4.0 and 14.1.2.1.0 allows unauthenticated attackers with network access to the OID LDAP Server component to take over the directory service, with high confidentiality, integrity and availability impact (CVSS 3.1 base score 9.8). Exploitation requires no credentials, no user interaction and no non-default configuration per the assessed vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H); the principal practical constraint is reachability of the LDAP listener, since directory servers are normally deployed on internal or segmented networks rather than exposed to the internet. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation over the network via the LDAP protocol against the OID LDAP Server component of Oracle Internet Directory 12.2.1.4.0 and 14.1.2.1.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | All signals point to genuine high priority. … 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 | Apply the Oracle fix delivered through the security alert at https://www.oracle.com/security-alerts/cspusep2026.html; Oracle states the affected releases are 12.2.1.4.0 and 14.1.2.1.0, and patches for Fusion Middleware issues of this type are published as part of the corresponding Critical Patch Update/Security Alert cycle - consult the advisory to confirm the exact patch build for your platform before upgrading, since no specific fix version number was provided in the source intelligence. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, determine whether Oracle Internet Directory 12.2.1.4.0 or 14.1.2.1.0 is deployed anywhere in the environment and immediately restrict network access to the OID LDAP Server listener by firewall rules or network segmentation so only trusted management hosts can reach it; within 7 days, implement compensating controls including isolating the LDAP listener on a dedicated VLAN, enabling LDAP bind and authentication logging with alerts for anomalous activity, and opening a case with Oracle Support to obtain a patch timeline; within 30 days, plan and execute an upgrade to a fixed version as soon as Oracle releases one, or migrate directory services to an alternative supported platform, and verify that no LDAP listener remains reachable from untrusted networks.
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External POC / Exploit Code
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