Key points
- Oracle Enterprise Manager versions 13.5 and 24.1 contain a critical vulnerability in Data Guard Management.
- The flaw allows low-privileged attackers with network access to compromise the system via HTTP.
- The National Vulnerability Database assigns a CVSS 3.1 Base Score of 9.9 to CVE-2026-101528.
The National Vulnerability Database records CVE-2026-101528 as a critical flaw within the Oracle Enterprise Manager for Oracle Database product. Specifically, the vulnerability resides in the Data Guard Management component. According to the NVD record, this issue affects supported versions 13.5 and 24.1. The weakness enables a low-privileged attacker with network access via HTTP to compromise the Oracle Enterprise Manager for Oracle Database. Successful exploitation results in the takeover of the management console, granting the attacker full control over the affected instance.
By the numbers
- 9.9 is the CVSS 3.1 Base Score assigned to this vulnerability by the NVD.
- 13.5 and 24.1 are the specific supported versions of Oracle Enterprise Manager affected.
- HTTP is the protocol through which a low-privileged attacker can exploit the flaw.
What the figures mean
A CVSS score of 9.9 indicates maximum impact on confidentiality, integrity, and availability. The vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H reveals specific attack characteristics. Attack Vector Network (AV:N) means the flaw can be exploited remotely over the network. Attack Complexity Low (AC:L) suggests the conditions for exploitation are simple.
Privileges Required Low (PR:L) indicates an attacker does not need administrative credentials to initiate the attack. User Interaction None (UI:N) implies the exploit can succeed without tricking a user into performing an action. Scope Changed (S:C) notes that the vulnerability can impact additional products beyond the vulnerable component. Confidentiality, Integrity, and Availability are all rated High (H), confirming total system compromise.
What to watch
Security teams should monitor the Oracle Enterprise Manager consoles for signs of unauthorized access. The vulnerability allows a low-privileged user to escalate to full takeover. Since the attack vector is HTTP, network traffic inspection may reveal anomalous requests to the Data Guard Management component. The NVD record confirms that attacks may significantly impact additional products due to the scope change.
This means compromising the management console could expose the underlying Oracle Database or other managed assets. Teams should verify the version of their Oracle Enterprise Manager installations immediately to determine if they are running 13.5 or 24.1. No fix has been confirmed yet in the provided source material.
Infection and persistence in general
Teams usually examine initial access logs to identify how attackers reached the management interface. Analysts check for anomalous HTTP requests targeting administrative endpoints. Persistence often involves creating new administrative accounts or modifying existing ones. Attackers may install web shells or backdoors within the web application directory.
Lateral movement tools are frequently deployed to scan the internal network for other vulnerable systems. Teams should review file integrity monitoring alerts for unexpected changes to configuration files. Checking audit logs for privilege escalation events is critical. Analysts often look for new scheduled tasks or services created by the compromised user.
What to do and how to stay safe: Oracle
- Verify the version of Oracle Enterprise Manager installations to confirm if they are 13.5 or 24.1.
- Restrict network access to the management console to trusted IP addresses only.
- Monitor HTTP traffic for unusual requests to the Data Guard Management component.
- Review user permissions to ensure low-privileged accounts cannot perform administrative actions.
Step-by-step guide: Patch Management Implementation: A Step-by-Step Rollout Plan
General security guidance from the Sandbox Gazette newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
Which versions of Oracle Enterprise Manager are affected by CVE-2026-101528?
Supported versions 13.5 and 24.1 of Oracle Enterprise Manager for Oracle Database are affected.
What is the CVSS score for this vulnerability?
The CVSS 3.1 Base Score is 9.9, rated as Critical.
Can a low-privileged user exploit this flaw?
Yes, the vulnerability allows a low-privileged attacker with network access via HTTP to compromise the system.
