Is CVE-2025-3985 actively exploited?

No active exploitation of CVE-2025-3985 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-3985 be exploited remotely?

Yes. CVE-2025-3985 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-3985?

CVE-2025-3985 has a CVSS score of 4.9 (MEDIUM).

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MEDIUM

CVE-2025-3985

CWE-400Published: April 27, 2025· Updated: Jun 17, 2026

4.9

CVSS v3.1

Official Description

A vulnerability was found in Apereo CAS 5.2.6. It has been classified as problematic. This affects the function ResponseEntity of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\ManageRegisteredServicesMultiActionController.java. The manipulation of the argument Query leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. 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.

NVD Source

Technical Analysis

CVE-2025-3985 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.9.