---
title: "CVE-2026-83189: Oracle Oracle User Management - Privilege Escalation"
description: "Oracle E-Business Suite Oracle User Management 12.2.3-12.2.15 contains a privilege escalation caused by flaws in Proxy User Delegation, letting low privileged attackers with network access via HTTP takeover the system, exploit requires low privilege network access."
url: https://panop.io/threat-heartbeat/CVE-2026-83189/
---

# CVE-2026-83189 Oracle Oracle User Management - Privilege Escalation

Oracle E-Business Suite Oracle User Management 12.2.3-12.2.15 contains a privilege escalation caused by flaws in Proxy User Delegation, letting low privileged attackers with network access via HTTP takeover the system, exploit requires low privilege network access.

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-2026-83189)

## Details

Type

Privilege Escalation

Impact

Privilege Escalation, Remote Code Execution, 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 12.2.15.

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-2026-83189](https://nvd.nist.gov/vuln/detail/CVE-2026-83189)
- [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

Panop answers these inside your environment, for this CVE and every other finding.

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