What is CVE-2023-21856?

CVE-2023-21856 is a high-severity vulnerability in Oracle Isetup, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2023-01-18.

How severe is CVE-2023-21856?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Oracle Isetup

CVE-2023-21856

Vulnerability in the Oracle iSetup product of Oracle E-Business Suite (component: General Ledger Update Transform, Reports). Supported versions that are affected are 12.2.3-12.2.12. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle iSetup. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle iSetup accessible data. CVSS 3.1 Base Score 7.5 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Vulnerability class: Broken Authentication

Published 2023-01-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.8th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Oracle Isetup
Oracle Corporation Isetup — versions 12.2.3-12.2.12

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

www.oracle.com/security-alerts/cpujan2023.html (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-21856?: CVE-2023-21856 is a high-severity vulnerability in Oracle Isetup, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2023-01-18.
How severe is CVE-2023-21856?: High severity. CVSS v3 base score is 7.5 out of 10.