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Oracle CVE-2026-83271

| EUVDEUVD-2026-79623 HIGH
2026-09-15 secalert_us@oracle.com GHSA-hq6g-wv4r-xv4r
8.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Sep 15, 2026 - 21:21 vuln.today
CVE Published
Sep 15, 2026 - 20:18 nvd
HIGH 8.8

DescriptionNVD

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 low privileged attacker having Execute on DBMS_REDEFINITION privilege with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in takeover of RDBMS. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

AnalysisAI

Oracle Database Server's RDBMS component (19c 19.3–19.32, 21c 21.3–21.23, and 23ai 23.4.0–23.26.3) can be fully compromised by a low-privileged database account that holds EXECUTE on the DBMS_REDEFINITION package. An attacker reaching the database over Oracle Net can abuse that package to achieve takeover of the RDBMS, with high confidentiality, integrity, and availability impact (CVSS 3.1 base 8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). …

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CVE-2026-83271 vulnerability details – vuln.today

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