Historical catalog analysis: CISA added this entry on June 10, 2025. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.
What the vulnerability is
CVE-2025-24016 is a vulnerability involving the deserialization of untrusted data (CWE-502) within Wazuh Server. This flaw could allow an attacker to achieve remote code execution (RCE) on the affected server.
Exposure and applicability
This vulnerability applies to organizations utilizing Wazuh Server for security monitoring, SIEM, or XDR functions. In a healthcare context, these servers often act as central hubs for collecting logs and alerts from across the clinical network, including systems that process electronic Protected Health Information (ePHI).
If an attacker successfully executes code on a Wazuh server, they could potentially blind the organization’s detection capabilities or use the server as a pivot point to move laterally into other sensitive areas of the healthcare environment. This poses a risk to both the confidentiality of patient data and the overall operational resilience of the facility.
Remediation priorities
Based on our analysis, healthcare security leaders should prioritize the following actions to reduce exposure:
- Identify Vulnerable Deployments: The IT or Security Operations (SecOps) team should immediately determine if Wazuh Server is deployed within their environment and verify the current version against vendor advisories.
- Apply Vendor Mitigations: Following the guidance provided by the vendor, administrators should apply the necessary patches or mitigations to address the deserialization flaw. This is the primary method for preventing initial access via this vector.
- Review Cloud Service Configurations: For organizations using Wazuh as a cloud service, security teams should review their configurations in alignment with relevant guidance (such as BOD 22-01) to ensure the service provider has addressed the vulnerability.
- Evaluate Product Continuity: In scenarios where mitigations are unavailable or cannot be applied due to legacy constraints, organizations should evaluate whether to discontinue use of the affected product to eliminate the risk.
How to validate remediation
To verify that the risk has been reduced, security teams can employ the following methods:
* Version Verification: Confirm that the installed version of Wazuh Server matches the patched version specified in the vendor’s security advisory. While a version check does not guarantee total security, it provides evidence that the known flaw has been addressed.
* Configuration Audit: For cloud-based deployments, request and review confirmation from the service provider that CVE-2025-24016 has been mitigated within their infrastructure.
Limits and open questions
It remains unknown whether this vulnerability has been utilized in active ransomware campaigns. Additionally, while CISA has established a remediation deadline of July 1, 2025, for federal agencies, this date is not a legal requirement for private healthcare providers, though it serves as a useful benchmark for risk management.
Applying patches could reduce the likelihood of exploitation, but residual risks remain. No single update eliminates all potential attack vectors; therefore, these mitigations should be part of a broader defense-in-depth strategy that includes network segmentation and strict access controls around security monitoring infrastructure.
Source and editorial note
CVE-2025-24016: Wazuh Server Deserialization of Untrusted Data Vulnerability · Source date: June 10, 2025 · Retrieved August 31, 2026.
Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.
Archive date: June 13, 2025. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: October 08, 2026 at 01:20 UTC.
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