CVE-2026-83056: Oracle Internet Directory LDAP privilege escalation

CVE-2026-83056 · Severity: critical · CVSS 9.9 · Published 2026-09-15

Oracle Internet Directory (OID) is a directory service component used in Oracle Fusion Middleware to manage user identities and access control. A privilege escalation vulnerability in the OID LDAP server allows a low-privileged network attacker to gain complete control over the directory service and potentially impact other connected systems. Successful exploitation could result in complete compromise of user authentication, authorization data, and downstream systems that depend on the directory.

Technologies: Oracle Internet Directory. Vendors: Oracle.

Quick answers

Is CVE-2026-83056 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-83056 being exploited in the wild.
How severe is CVE-2026-83056?
Critical severity, with a CVSS score of 9.9, published 15 September 2026.
Which products and versions are affected?
Oracle Internet Directory 12.2.1.4.0, 14.1.2.1.0.
Is there a fix for CVE-2026-83056?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-83056 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-83056?
Check whether you run Oracle Internet Directory at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the OID LDAP Server component and is easily exploitable by a low-privileged attacker with network access via LDAP protocol. The attack requires minimal preconditions (low privilege account, network reachability) and does not require user interaction. Successful exploitation results in complete takeover (confidentiality, integrity, and availability impact) of Oracle Internet Directory with scope change, meaning the impact extends beyond the vulnerable component to additional Oracle products that rely on the directory service. The vulnerability affects OID versions 12.2.1.4.0 and 14.1.2.1.0.

Affected products

  • Oracle Internet Directory 12.2.1.4.0, 14.1.2.1.0

Timeline

  • 2026-09-15: disclosed

References

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