# CVE-2026-83066: Oracle Internet Directory LDAP server remote takeover

Source: https://junglewise.ai/threats/cve-2026-83066-oracle-internet-directory-ldap-server-remote-takeover  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-83066 · Severity: critical · CVSS 9.8 · Published 2026-09-15

Oracle Internet Directory is a directory service component of Oracle Fusion Middleware used to store and manage user and resource information across enterprise systems. This vulnerability allows an unauthenticated attacker on the network to gain complete control over the directory service without authentication, enabling them to read sensitive data, modify configurations, or disrupt directory operations that other applications depend on.

Technologies: [Oracle Internet Directory](https://junglewise.ai/threats/technologies/internet-directory). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-83066 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83066 being exploited in the wild.

**How severe is CVE-2026-83066?** Critical severity, with a CVSS score of 9.8, 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-2026-83066?** 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-2026-83066 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-83066?** 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

This is a remote code execution or authentication bypass vulnerability in the OID LDAP Server component, accessible via the T3 and IIOP protocols. The vulnerability requires no authentication and can be exploited by an unauthenticated attacker with network access to the affected service. Successful exploitation results in complete takeover of the Oracle Internet Directory, allowing the attacker to compromise confidentiality, integrity, and availability of the directory service. The vulnerability affects versions 12.2.1.4.0 and 14.1.2.1.0 of Oracle Internet Directory. Patch availability information is not provided in the advisory.

## Affected products

- Oracle Internet Directory 12.2.1.4.0, 14.1.2.1.0

## Timeline

- 2026-09-15: disclosed

## References

- [https://www.oracle.com/security-alerts/cspusep2026.html](https://www.oracle.com/security-alerts/cspusep2026.html)

## Related threats

- [Oracle Internet Directory LDAP privilege escalation](https://junglewise.ai/threats/cve-2026-83063-oracle-internet-directory-ldap-privilege-escalation)
- [Oracle Internet Directory LDAP authentication bypass](https://junglewise.ai/threats/cve-2026-83062-oracle-internet-directory-ldap-authentication-bypass)
- [Oracle Internet Directory LDAP authentication bypass](https://junglewise.ai/threats/cve-2026-83061-oracle-internet-directory-ldap-authentication-bypass)
- [Oracle Internet Directory LDAP authentication bypass](https://junglewise.ai/threats/cve-2026-83060-oracle-internet-directory-ldap-authentication-bypass)
- [Oracle Internet Directory LDAP server privilege escalation](https://junglewise.ai/threats/cve-2026-83058-oracle-internet-directory-ldap-server-privilege-escalation)