How severe is CVE-2023-21856?

CVE-2023-21856 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-21856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21856?

CVE-2023-21856 affects Oracle Isetup. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-21856?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-21856 published?

CVE-2023-21856 was published on 2023-01-18 and last updated on 2026-06-17.

CVE-2023-21856

CVE-2023-21856 is a high-severity vulnerability in Oracle Isetup with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Oracle Isetup
Published: 2023-01-18
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is 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).
How severe is CVE-2023-21856?: CVE-2023-21856 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-21856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-21856?: CVE-2023-21856 affects Oracle Isetup. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-21856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-21856 published?: CVE-2023-21856 was published on 2023-01-18 and last updated on 2026-06-17.

References

https://www.oracle.com/security-alerts/cpujan2023.html

Affected products (1)

cpe:2.3:a:oracle:isetup:*:*:*:*:*:*:*:*

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