Oracle Database Server RDBMS improper access control exposes data
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
Oracle Database Server's RDBMS component has an improper access control flaw (CWE-284). Versions 23.4.0 through 23.26.3 are affected. A low-privileged attacker with network access over HTTP can exploit it with low complexity and no user interaction, gaining unauthorized access to critical data or complete access to all data the RDBMS can reach. The CVSS 3.1 base score is 6.5 (Medium), with impact on confidentiality only.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having None privilege with network access via HTTP to compromise RDBMS. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all RDBMS accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for 23.4.0 through 23.26.3. Check Oracle's security advisories for a patch, and until one is applied, restrict HTTP access to the database to trusted networks.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Oracle Database Server — oracle.com/security-alerts/cpuoct2026.html
7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2026-77548 Privilege management flaw in Oracle Database Server RDBMS componentPriority MEDIUM 40
- TI-2026-77551 Improper access control in Oracle Database Server VPD componentPriority LOW 37
- TI-2026-77592 Access control flaw in Oracle Database Server RDBMS exposes dataPriority LOW 34
Timeline
- 2026-10-21 Threatist record created from CVE-2026-101512
- 2026-10-21 Alias added: GHSA-h5wv-rhpr-545j
- 2026-10-22 Priority changed: MEDIUM → LOW
- 2026-11-06 Weakness changed · CISA ADP
- 2026-11-06 CISA SSVC decision points changed
References
Advisory 1
More Oracle vulnerabilities
- TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
- TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
- TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
- TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
- TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
- TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-101512 · CVE Program
- CVE-2026-101512 · NVD
- FIRST EPSS
- GHSA-h5wv-rhpr-545j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences