CVE-2026-83348: Easily exploitable vulnerability allows low privileged attacker having Create DB Link privilege with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in takeover of RDBMS. in Oracle Corporation Oracle Database Server
CVE-2026-83348 is a high-severity vulnerability in Oracle Database Server's RDBMS component affecting versions 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3. It allows a low privileged attacker with Create DB Link privilege and network access via Oracle Net to compromise the database server. Successful exploitation can lead to full takeover of the RDBMS, impacting confidentiality, integrity, and availability. Oracle has released patches addressing this vulnerability as part of their September 2026 Critical Security Patch Update.
AI Analysis
Technical Summary
This vulnerability in Oracle Database Server's RDBMS component enables an attacker with low privileges (specifically, Create DB Link privilege) and network access through Oracle Net to compromise the database server. The vulnerability affects multiple supported versions: 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. The CVSS 3.1 base score is 8.8, indicating high severity with impacts on confidentiality, integrity, and availability. Oracle has included a fix for this vulnerability in their September 2026 Critical Security Patch Update, which contains numerous security patches across Oracle products.
Potential Impact
The vulnerability allows an attacker with limited privileges and network access to fully compromise the Oracle RDBMS, potentially leading to complete takeover of the database server. This results in high impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Oracle has released an official fix for this vulnerability in the September 2026 Critical Security Patch Update. Users should apply the relevant patches promptly to mitigate the risk. Oracle strongly recommends remaining on actively supported versions and applying security patches without delay to prevent exploitation.
CVE-2026-83348: Easily exploitable vulnerability allows low privileged attacker having Create DB Link privilege with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in takeover of RDBMS. in Oracle Corporation Oracle Database Server
Description
CVE-2026-83348 is a high-severity vulnerability in Oracle Database Server's RDBMS component affecting versions 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3. It allows a low privileged attacker with Create DB Link privilege and network access via Oracle Net to compromise the database server. Successful exploitation can lead to full takeover of the RDBMS, impacting confidentiality, integrity, and availability. Oracle has released patches addressing this vulnerability as part of their September 2026 Critical Security Patch Update.
CVSS v3.1
Score 8.8high
Affected software
Oracle Corporation
Oracle Database Server
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Oracle Database Server's RDBMS component enables an attacker with low privileges (specifically, Create DB Link privilege) and network access through Oracle Net to compromise the database server. The vulnerability affects multiple supported versions: 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. The CVSS 3.1 base score is 8.8, indicating high severity with impacts on confidentiality, integrity, and availability. Oracle has included a fix for this vulnerability in their September 2026 Critical Security Patch Update, which contains numerous security patches across Oracle products.
Potential Impact
The vulnerability allows an attacker with limited privileges and network access to fully compromise the Oracle RDBMS, potentially leading to complete takeover of the database server. This results in high impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Oracle has released an official fix for this vulnerability in the September 2026 Critical Security Patch Update. Users should apply the relevant patches promptly to mitigate the risk. Oracle strongly recommends remaining on actively supported versions and applying security patches without delay to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-31T15:40:57.354Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspusep2026.html","vendor":"Oracle"}]
Threat ID: 6aa9a84455bf5e2cf553819a
Added to database: 09/15/2026, 20:19:16 UTC
Last enriched: 09/15/2026, 23:05:10 UTC
Last updated: 09/15/2026, 23:33:22 UTC
Views: 5
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