How severe is CVE-2025-3984?

CVE-2025-3984 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-3984 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3984?

CVE-2025-3984 affects Apereo Central Authentication Service. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3984?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-3984 have an EU (EUVD) identifier?

Yes. CVE-2025-3984 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12431.

When was CVE-2025-3984 published?

CVE-2025-3984 was published on 2025-04-27 and last updated on 2026-06-17.

CVE-2025-3984

CVE-2025-3984 is a medium-severity vulnerability in Apereo Central Authentication Service with a CVSS 3.x base score of 5.0. 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-94.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
CVSS v2: 4.6
CVSS v4: 2.3
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12431
Weakness: CWE-94
Affected product: Apereo Central Authentication Service
Published: 2025-04-27
Last modified: 2026-06-17

Description

A vulnerability was found in Apereo CAS 5.2.6 and classified as critical. Affected by this issue is the function saveService of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\RegisteredServiceSimpleFormController.java of the component Groovy Code Handler. The manipulation leads to code injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-3984?: A vulnerability was found in Apereo CAS 5.2.6 and classified as critical. Affected by this issue is the function saveService of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\RegisteredServiceSimpleFormController.java of the component Groovy Code Handler. The manipulation leads to code injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-3984?: CVE-2025-3984 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-3984 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3984?: CVE-2025-3984 affects Apereo Central Authentication Service. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3984?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3984 have an EU (EUVD) identifier?: Yes. CVE-2025-3984 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12431.
When was CVE-2025-3984 published?: CVE-2025-3984 was published on 2025-04-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apereo:central_authentication_service:5.2.6:*:*:*:*:*:*:*

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