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 ↗

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

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

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