CVE-2026-71100: Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in unauthorized read access to a subset of RDBMS accessible data. in Oracle Corporation Oracle Database Server
Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in unauthorized read access to a subset of RDBMS accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
AI Analysis
Technical Summary
This vulnerability (CVE-2026-71100) affects Oracle Database Server's RDBMS component in versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. It permits an unauthenticated attacker with network access via Oracle Net to compromise the RDBMS, resulting in unauthorized read access to a subset of accessible data. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and limited confidentiality impact without integrity or availability impact. Oracle’s August 2026 Critical Security Patch Update addresses this vulnerability among 943 fixes. Oracle recommends applying patches without delay to avoid exploitation.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to read a subset of data accessible through the Oracle Database Server without authorization. There is no impact on data integrity or availability. The confidentiality impact is limited but unauthorized data disclosure can occur.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of its August 2026 Critical Security Patch Update. Customers should apply the official Oracle patches promptly to remediate this vulnerability. Oracle strongly recommends remaining on actively-supported versions and applying security updates without delay. Patch status is confirmed as official-fix via the Oracle advisory.
CVE-2026-71100: Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in unauthorized read access to a subset of RDBMS accessible data. in Oracle Corporation Oracle Database Server
Description
Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in unauthorized read access to a subset of RDBMS accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
CVSS v3.1
Score 5.3medium
Affected software
Oracle Corporation
Oracle Database Server
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-71100) affects Oracle Database Server's RDBMS component in versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. It permits an unauthenticated attacker with network access via Oracle Net to compromise the RDBMS, resulting in unauthorized read access to a subset of accessible data. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and limited confidentiality impact without integrity or availability impact. Oracle’s August 2026 Critical Security Patch Update addresses this vulnerability among 943 fixes. Oracle recommends applying patches without delay to avoid exploitation.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to read a subset of data accessible through the Oracle Database Server without authorization. There is no impact on data integrity or availability. The confidentiality impact is limited but unauthorized data disclosure can occur.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of its August 2026 Critical Security Patch Update. Customers should apply the official Oracle patches promptly to remediate this vulnerability. Oracle strongly recommends remaining on actively-supported versions and applying security updates without delay. Patch status is confirmed as official-fix via the Oracle advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-04T22:06:34.617Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84ccd0c6e8be0332c3908a
Added to database: 08/18/2026, 21:21:20 UTC
Last enriched: 09/18/2026, 23:33:38 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 118
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