Vulnerability in the RDBMS component of Oracle Database Server. (CVE-2026-83351)
A vulnerability exists in the RDBMS component of Oracle Database Server versions 23.4.0 through 23.26.3. This vulnerability allows an unauthenticated attacker with network access via Oracle Net to potentially take over the RDBMS. The vulnerability has a high CVSS score of 8.1, indicating significant confidentiality, integrity, and availability impacts. Oracle has released a Critical Security Patch Update addressing this and many other vulnerabilities.
AI Analysis
Technical Summary
CVE-2026-83351 is a vulnerability in the RDBMS component of Oracle Database Server affecting versions 23.4.0 to 23.26.3. It allows an unauthenticated attacker with network access via Oracle Net to compromise the RDBMS, potentially resulting in full takeover. The vulnerability is rated with a CVSS 3.1 base score of 8.1, reflecting high impact on confidentiality, integrity, and availability. Oracle has included a fix for this vulnerability in its September 2026 Critical Security Patch Update, which contains 673 security patches across multiple Oracle products.
Potential Impact
Successful exploitation can lead to complete compromise of the Oracle Database Server RDBMS, affecting confidentiality, integrity, and availability of the database. The vulnerability requires network access but no authentication, though it is rated as difficult to exploit. The high CVSS score (8.1) reflects the critical nature of the impact.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in September 2026 that includes a fix for this vulnerability. Customers are strongly advised to apply the available patches promptly to mitigate the risk. Oracle recommends remaining on actively supported versions and applying security patches without delay. No additional mitigation steps are specified beyond applying the official patch.
Vulnerability in the RDBMS component of Oracle Database Server. (CVE-2026-83351)
Description
A vulnerability exists in the RDBMS component of Oracle Database Server versions 23.4.0 through 23.26.3. This vulnerability allows an unauthenticated attacker with network access via Oracle Net to potentially take over the RDBMS. The vulnerability has a high CVSS score of 8.1, indicating significant confidentiality, integrity, and availability impacts. Oracle has released a Critical Security Patch Update addressing this and many other vulnerabilities.
CVSS v3.1
Score 8.1high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-83351 is a vulnerability in the RDBMS component of Oracle Database Server affecting versions 23.4.0 to 23.26.3. It allows an unauthenticated attacker with network access via Oracle Net to compromise the RDBMS, potentially resulting in full takeover. The vulnerability is rated with a CVSS 3.1 base score of 8.1, reflecting high impact on confidentiality, integrity, and availability. Oracle has included a fix for this vulnerability in its September 2026 Critical Security Patch Update, which contains 673 security patches across multiple Oracle products.
Potential Impact
Successful exploitation can lead to complete compromise of the Oracle Database Server RDBMS, affecting confidentiality, integrity, and availability of the database. The vulnerability requires network access but no authentication, though it is rated as difficult to exploit. The high CVSS score (8.1) reflects the critical nature of the impact.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in September 2026 that includes a fix for this vulnerability. Customers are strongly advised to apply the available patches promptly to mitigate the risk. Oracle recommends remaining on actively supported versions and applying security patches without delay. No additional mitigation steps are specified beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-pfrj-7j99-7h44
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-83351"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa07dc55bf5e2cf5ea328b
Added to database: 09/16/2026, 03:07:08 UTC
Last enriched: 09/16/2026, 03:53:46 UTC
Last updated: 09/16/2026, 05:01:23 UTC
Views: 3
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