CVE-2026-83088: Easily exploitable vulnerability allows low privileged attacker having Authenticated User privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of RDBMS. in Oracle Corporation Oracle Database Server
CVE-2026-83088 is a high-severity vulnerability in Oracle Database Server's RDBMS component affecting versions 23.4.0 through 23.26.3. It allows a low privileged authenticated user with network access via Oracle Net to cause a hang or repeated crash, resulting in a complete denial of service (DoS). The vulnerability impacts availability but does not affect confidentiality or integrity. Oracle has released a Critical Security Patch Update addressing this and many other vulnerabilities.
AI Analysis
Technical Summary
This vulnerability in Oracle Database Server's RDBMS component (CVE-2026-83088) affects versions 23.4.0 through 23.26.3. An attacker with authenticated user privileges and network access via Oracle Net can exploit this flaw to cause the database to hang or crash repeatedly, resulting in a complete denial of service. The vulnerability has a CVSS 3.1 base score of 7.7, reflecting high impact on availability with no impact on confidentiality or integrity. The scope of the vulnerability extends beyond RDBMS, potentially affecting additional Oracle products. Oracle has included a fix for this vulnerability in its September 2026 Critical Security Patch Update.
Potential Impact
Successful exploitation results in unauthorized ability to cause a hang or frequent crash of the Oracle Database Server, leading to complete denial of service. There is no impact on confidentiality or integrity. The vulnerability affects availability and may have broader impact on other Oracle products due to scope change.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in September 2026 that addresses this vulnerability. Customers are strongly advised to apply the security patches promptly to remediate this issue. No additional mitigation steps are indicated beyond applying the official patch. Patch status is confirmed by the vendor advisory.
CVE-2026-83088: Easily exploitable vulnerability allows low privileged attacker having Authenticated User privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of RDBMS. in Oracle Corporation Oracle Database Server
Description
CVE-2026-83088 is a high-severity vulnerability in Oracle Database Server's RDBMS component affecting versions 23.4.0 through 23.26.3. It allows a low privileged authenticated user with network access via Oracle Net to cause a hang or repeated crash, resulting in a complete denial of service (DoS). The vulnerability impacts availability but does not affect confidentiality or integrity. Oracle has released a Critical Security Patch Update addressing this and many other vulnerabilities.
CVSS v3.1
Score 7.7high
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 (CVE-2026-83088) affects versions 23.4.0 through 23.26.3. An attacker with authenticated user privileges and network access via Oracle Net can exploit this flaw to cause the database to hang or crash repeatedly, resulting in a complete denial of service. The vulnerability has a CVSS 3.1 base score of 7.7, reflecting high impact on availability with no impact on confidentiality or integrity. The scope of the vulnerability extends beyond RDBMS, potentially affecting additional Oracle products. Oracle has included a fix for this vulnerability in its September 2026 Critical Security Patch Update.
Potential Impact
Successful exploitation results in unauthorized ability to cause a hang or frequent crash of the Oracle Database Server, leading to complete denial of service. There is no impact on confidentiality or integrity. The vulnerability affects availability and may have broader impact on other Oracle products due to scope change.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in September 2026 that addresses this vulnerability. Customers are strongly advised to apply the security patches promptly to remediate this issue. No additional mitigation steps are indicated beyond applying the official patch. Patch status is confirmed by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-31T15:40:57.339Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspusep2026.html","vendor":"Oracle"}]
Threat ID: 6aa9a81655bf5e2cf5537cf4
Added to database: 09/15/2026, 20:18:30 UTC
Last enriched: 09/15/2026, 22:41:54 UTC
Last updated: 09/15/2026, 23:42:04 UTC
Views: 3
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