CVE-2026-47045 in Database Server
Summary
by MITRE • 07/22/2026
Vulnerability in the JDBC component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows high privileged attacker having None privilege with network access via Oracle Net to compromise JDBC. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of JDBC. CVSS 3.1 Base Score 6.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 07/22/2026
The vulnerability under discussion affects the JDBC component of Oracle Database Server, representing a significant security concern within enterprise database infrastructure. This flaw exists in specific version ranges including 19.3 through 19.31, 21.3 through 21.22, and 23.4.0 through 23.26.2, indicating a widespread impact across multiple Oracle Database Server releases. The vulnerability's classification as easily exploitable suggests that attackers can leverage relatively straightforward attack vectors to compromise the JDBC functionality, making it particularly concerning for organizations relying on database connectivity.
The technical nature of this vulnerability involves an attacker with high privileged access and network capabilities through Oracle Net protocols being able to compromise the JDBC component. This represents a privilege escalation scenario where the attacker's initial access level is already elevated but can be further leveraged through this specific vulnerability. The requirement for human interaction from someone other than the attacker indicates that while the technical exploit itself may be automated, social engineering or user-based factors play a role in successful exploitation. This dual nature of attack requirements suggests potential for both automated and targeted attacks depending on the specific environment and user behavior patterns.
The operational impact of this vulnerability is severe as evidenced by the CVSS 3.1 Base Score of 6.8, which falls into the high severity category. The vector (AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H) reveals that the attack requires network access with low complexity but demands high privileges from the attacker. The fact that the attack affects confidentiality, integrity, and availability simultaneously means that successful exploitation could result in complete system compromise. The human interaction requirement suggests that while the technical exploit may be straightforward, organizations must also consider user awareness training as part of their defense strategy.
The vulnerability's impact on JDBC functionality could enable attackers to gain complete control over database connectivity operations, potentially allowing for data exfiltration, modification of database contents, or disruption of database services. This aligns with CWE categories related to privilege escalation and insufficient input validation, where the JDBC component fails to properly validate or sanitize inputs received through Oracle Net protocols. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access, as attackers can leverage their elevated privileges to gain further system control.
Organizations must implement immediate mitigations including applying relevant security patches from Oracle to address the specific version ranges affected. Network segmentation and access controls should be strengthened to limit Oracle Net protocol access to only necessary systems and users. Monitoring for unusual JDBC connectivity patterns or unauthorized access attempts through Oracle Net protocols should be enhanced as part of ongoing security operations. Regular vulnerability assessments should include specific checks for this JDBC vulnerability across all supported Oracle Database Server versions to ensure comprehensive coverage and prevent potential exploitation by adversaries. The human interaction component of the attack vector necessitates regular security awareness training to reduce the risk of social engineering components that could facilitate successful exploitation attempts.
This vulnerability demonstrates the critical importance of keeping database server components updated, as even high-privileged access points can be leveraged for significant system compromise when proper security controls are not in place. The combination of network accessibility with elevated privileges creates a dangerous attack surface that organizations must address through both technical and administrative controls to maintain database security integrity.