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checkmk

Insufficient permission validation in Checkmk 2.4.0 before version 2.4.0p16 allows low-privileged users to modify notification parameters via the REST API, which could lead to unauthorized actions or information disclosure.

CVE-2025-58122 identifies an improper permission validation vulnerability (CWE-280) in Checkmk, a popular IT infrastructure monitoring tool developed by Checkmk GmbH. The affected version is 2.4.0 before patch 2.4.0p16. The flaw resides in the REST API's handling of notification parameters, where low-privileged users can modify these parameters without proper authorization checks. Notification parameters typically control alerting behaviors, including who receives alerts and under what conditions. Unauthorized modification could allow attackers to suppress critical alerts, redirect notifications, or extract sensitive information about monitored systems. The vulnerability is remotely exploitable over the network without requiring user interaction or elevated privileges, making it accessible to authenticated low-privileged users. The CVSS 4.0 base score is 5.3 (medium), reflecting low attack complexity and no need for user interaction but limited scope and impact. While no public exploits are known, the vulnerability poses a risk to the integrity and confidentiality of monitoring alerts and potentially the availability of timely incident response. The issue was reserved in August 2025 and published in November 2025, indicating recent discovery and disclosure. Organizations relying on Checkmk for monitoring should assess their exposure and apply patches or mitigations promptly.

Detailed information about CVE-2025-58122: CWE-280: Improper Handling of Insufficient Permissions or Privileges in Checkmk GmbH Checkmk affecting Checkmk GmbH C

CVE-2025-58122: CWE-280: Improper Handling of Insufficient Permissions or Privileges in Checkmk GmbH Checkmk - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-58122: CWE-280: Improper Handling of Insufficient Permissions or Privileges in Checkmk GmbH Checkmk

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