---
title: "CVE-2026-83271: Oracle Database Server - Remote Code Execution"
description: "Oracle Database Server 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3 contain a remote code execution caused by improper privilege validation in DBMS_REDEFINITION, letting low privileged attackers with Execute privilege on DBMS_REDEFINITION compromise the RDBMS remotely, exploit requires Execute privilege on DBMS_REDEFINITION."
url: https://panop.io/threat-heartbeat/CVE-2026-83271/
---

# CVE-2026-83271 Oracle Database Server - Remote Code Execution

Oracle Database Server 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3 contain a remote code execution caused by improper privilege validation in DBMS\_REDEFINITION, letting low privileged attackers with Execute privilege on DBMS\_REDEFINITION compromise the RDBMS remotely, exploit requires Execute privilege on DBMS\_REDEFINITION.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.42% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-83271)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution, Information Disclosure, Data Tampering, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-269](https://cwe.mitre.org/data/definitions/269.html)

## Vendor fix

Update to the latest available version beyond 19.32, 21.23, or 23.26.3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-83271](https://nvd.nist.gov/vuln/detail/CVE-2026-83271)
- [https://www.oracle.com/security-alerts/cspusep2026.html](https://www.oracle.com/security-alerts/cspusep2026.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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