Oracle Enterprise Manager Data Guard Flaw Rated Critical 9.9 CVSS

Oracle Enterprise Manager for Oracle Database contains a critical vulnerability in its Data Guard Management component that allows remote attackers to take full control of the management system. The National Vulnerability Database records this flaw as CVE-2026-101528 with a CVSS score of 9.9.

The vulnerability is rated as easily exploitable and requires low-privileged access via HTTP for an attacker to compromise the software. According to the NVD record, successful attacks result in high impacts on confidentiality, integrity, and availability. The flaw enables a complete takeover of the Oracle Enterprise Manager for Oracle Database product.

Technical Scope and Severity

The Common Vulnerability Scoring System version 3.1 base score of 9.9 indicates a severe risk to affected organizations. The CVSS vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) shows that the attack vector is network-based and requires low complexity. Privileges required are low, and user interaction is not needed for exploitation.

While the vulnerability resides within Oracle Enterprise Manager for Oracle Database, the NVD notes that attacks may significantly impact additional products due to scope change. This means the compromise could extend beyond the immediate component to affect other systems managed by or connected to the enterprise manager.

Affected Versions and Exposure

Only specific supported versions of the product are affected by this vulnerability. Oracle Enterprise Manager version 13.5 and version 24.1 are the confirmed affected releases according to the NVD record. Organizations running these versions must assume their Data Guard Management components are vulnerable to remote exploitation.

The exposure is significant because the flaw allows network access via HTTP. Attackers do not need physical access to initiate the exploit. The low privilege requirement means that attackers with low-privileged accounts can leverage the vulnerability if the HTTP interface is exposed to the network.

What should you do?

Organizations should immediately verify which versions of Oracle Enterprise Manager they are currently running in their production and development environments. If version 13.5 or 24.1 is in use, the Data Guard Management component is vulnerable according to the NVD. Network administrators should review firewall rules to restrict HTTP access to the Oracle Enterprise Manager interface.

WHAT TO DO:

• Audit your environment to confirm if Oracle Enterprise Manager versions 13.5 or 24.1 are deployed
• Restrict network access to the Oracle Enterprise Manager HTTP interface using firewalls or access control lists
• Monitor logs for unusual HTTP traffic or low-privilege authentication attempts targeting the Data Guard Management component
• Contact Oracle support to inquire about the status of patches or workarounds for CVE-2026-101528

What to do and how to stay safe: Oracle

• Vulnerability severity scores ignore your specific architecture and context.
• Exploitability depends on network exposure and user behavior, not just code flaws.
• Prioritization requires continuous asset inventory and threat intelligence alignment.

Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.

Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger

General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

What is the CVSS score for CVE-2026-101528?

The CVSS 3.1 Base Score is 9.9, which is classified as critical severity.

Which Oracle Enterprise Manager versions are affected?

Versions 13.5 and 24.1 of Oracle Enterprise Manager for Oracle Database are affected.

Can an attacker exploit this vulnerability remotely?

Yes, the vulnerability allows a low-privileged attacker with network access via HTTP to compromise the system.