CVE-2026-83056

9.9

Oracle · Oracle Internet Directory

A critical vulnerability in the Oracle Internet Directory LDAP server allows low-privileged, network-adjacent attackers to achieve a full system takeover and cross-product compromise.

Executive summary

A critical vulnerability in Oracle Internet Directory allows low-privileged attackers to gain full control over the application and potentially impact broader enterprise infrastructure.

Vulnerability

The vulnerability exists within the OID LDAP Server component and is triggered via network access. An attacker with low privileges can exploit this flaw to bypass security controls and achieve a total system takeover, with the potential for scope change affecting integrated products.

Business impact

The potential for a total takeover of the Oracle Internet Directory poses a severe risk to organizational identity management and access control. Given the CVSS score of 9.9 and the potential for lateral movement across integrated systems, this vulnerability could lead to widespread unauthorized access, data exfiltration, and significant operational disruption.

Remediation

Immediate Action: Organizations should review the official Oracle security advisory for the specified release and apply the relevant patches to versions 12.2.1.4.0 and 14.1.2.1.0 immediately.

Proactive Monitoring: Security teams should increase monitoring of LDAP traffic for anomalous query patterns or unauthorized connection attempts to the directory server.

Compensating Controls: Implement strict network segmentation to restrict access to the LDAP server to only authorized internal subnets and utilize intrusion detection systems to identify suspicious traffic spikes.

Exploitation status

Public Exploit Available: No

Analyst recommendation

Due to the critical nature of this vulnerability and the potential for full directory compromise, administrators must prioritize the identification and remediation of all affected Oracle Internet Directory instances. Apply the vendor-provided patches as soon as they become available to prevent potential exploitation.

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History

  1. Disclosed CVE record published
  2. Collected by CVE Brief via github
  3. Analyst report written
  4. Published in the daily brief critical section

Sources