Oracle Secure Backup Authentication Bypass Flaw Enables Full System Takeover
A critical vulnerability in Oracle Secure Backup allows network-based attackers to compromise the system without credentials, resulting in full takeover.
Key points
- CVE-2026-101484 carries a CVSS 3.1 score of 9.8, rated Critical.
- The flaw affects Oracle Secure Backup versions 19.1.0.0.0 and 19.1.0.1.0.
- Attackers require only network access via TCP to compromise the service.
Oracle Secure Backup contains a critical vulnerability that permits unauthenticated system compromise. The National Vulnerability Database records this flaw as CVE-2026-101484. It resides within the Backup and Restore component of the software. An attacker with basic network access can exploit this issue over TCP. Successful exploitation results in complete takeover of the Oracle Secure Backup system.
Root cause
The vulnerability is located within the Backup and Restore component. The National Vulnerability Database describes the weakness as easily exploitable. It allows an unauthenticated attacker to compromise the system entirely. The issue impacts confidentiality, integrity, and availability. The CVSS vector indicates no user interaction or privileges are required.
Attack path
Attackers need only network access via TCP to initiate the exploit. No authentication credentials are necessary for the attack. The low complexity of the attack path is reflected in the CVSS metrics. A successful attack grants the adversary full control over the Oracle Secure Backup instance. This leads to total system compromise.
Affected versions
- Oracle Secure Backup 19.1.0.0.0
- Oracle Secure Backup 19.1.0.1.0
Mitigation
- Verify if your environment runs Oracle Secure Backup 19.1.0.0.0 or 19.1.0.1.0.
- Restrict network access to the Backup and Restore component via TCP.
- Monitor for unauthorised connections to the service ports.
- Await vendor guidance for patches or updates.
Signals worth monitoring
Teams usually observe anomalous network traffic targeting backup service ports. Look for unexpected process spawns or privilege escalations on the server. Check authentication logs for successful logins without prior credential entry. Monitor for sudden configuration changes or new user accounts. Containment moves typically involve isolating the affected host from the network. Disable remote access to the backup service temporarily. Review firewall rules to block unauthorised TCP connections. Analyse memory dumps for signs of remote code execution. Ensure logging is enabled for all service interactions.
Background: Privilege escalation attacks
Prevent privilege escalation by enforcing least privilege, auditing service accounts, and validating file permissions. Secure temporary directories, restrict kernel module loading, and monitor for unexpected process creations. Regularly review group memberships and disable unused administrative roles to close common attack vectors before they are exploited.
Read the full guide: Privilege Escalation Attack Prevention Checklist for Secure Systems
What to do and how to stay safe: Oracle Secure Backup
- Audit your network to identify all instances of Oracle Secure Backup.
- Confirm the specific version numbers running in your environment.
- Implement strict firewall rules to limit TCP access to the service.
- Monitor system logs for signs of unauthorised system compromise.
Step-by-step guide: Out-of-band patches: what small businesses need to know
General security guidance from the Firewall Pulse newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is the CVSS score for CVE-2026-101484?
The CVSS 3.1 Base Score is 9.8, which is rated Critical.
Which Oracle Secure Backup versions are affected?
Versions 19.1.0.0.0 and 19.1.0.1.0 are affected by this vulnerability.
Does the attacker need authentication to exploit this flaw?
No, the vulnerability allows an unauthenticated attacker to compromise the system.
