Privilege escalation in Oracle Corporation User Management

CVE-2026-83189

Vulnerability in the Oracle User Management product of Oracle E-Business Suite (component: Proxy User Delegation). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle User Management. Successful attacks of this vulnerability can result in takeover of Oracle User Management. 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).

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (36.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-83189: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-83189?
CVE-2026-83189 is a high-severity vulnerability in Oracle Corporation User Management, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-09-15.
How severe is CVE-2026-83189?
High severity. CVSS v3 base score is 8.8 out of 10.