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Exploited vulnerability · CISA KEV

Is CVE-2025-24016 exploited? Yes: in CISA KEV since 10 Jun 2025

Gociux · Wazuh Server · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2025-24016, Wazuh Server Deserialization of Untrusted Data Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 10 Jun 2025, 120 days after it was published. It affects Wazuh Server. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 10 Jun 2025
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.9CVSS 3.1 · critical
US federal due1 Jul 2025BOD 22-01 deadline

What it is

Wazuh contains a deserialization of untrusted data vulnerability that allows for remote code execution on Wazuh servers.

VendorWazuh (1 exploited CVE in KEV)
ProductWazuh Server
VulnerabilityWazuh Server Deserialization of Untrusted Data Vulnerability
WeaknessCWE-502
Published10 Feb 2025
Added to KEV10 Jun 2025
Reported by (CNA)GitHub_M

What to do

  1. Check whether you run it. Look for Wazuh Server in your asset inventory, including appliances and cloud images. Stack check lists every exploited Wazuh CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 10 Feb 2025.
  4. Get told next time. Email alerts when CISA adds a CVE for Wazuh.

References

Questions

Is CVE-2025-24016 being exploited?

Yes. CISA added CVE-2025-24016 to the Known Exploited Vulnerabilities catalog on 10 Jun 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2025-24016 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2025-24016?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Wazuh's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Wazuh Server and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in June 2025 · act-now radar.

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