CVE-2026-61800 Details
Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. In versions 4.4.0 through 4.14.6, a party holding the cluster key can write, overwrite, or delete arbitrary files under /var/ossec on worker nodes, leading to remote code execution as root. During cluster file synchronization, the non-merged branch of update_master_files_in_worker() moves each staged file to a destination derived only from safe_join(), which confines the path to /var/ossec but never verifies that the file lands in the directory declared by its cluster_item_key. Because the destination check present on the primary node and on the worker's merged branch was not applied, a peer can place files at attacker-chosen locations under /var/ossec, including paths that are executed as root, and the delete branch has the same gap. This is an incomplete fix for CVE-2026-30893, which addressed traversal outside /var/ossec but left this path able to redirect files anywhere within it. This issue is fixed in version 4.14.7.
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Exploit prediction scoring system (EPSS) score for CVE-2026-61800
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.98 Probability of exploitation activity being observed over the next 30 days (62nd percentile)
CVSS score for CVE-2026-61800
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
9.1 Critical
Products affected by CVE-2026-61800
Wazuh 4.10.1
Wazuh 4.11.0
Wazuh 4.11.1
Wazuh 4.11.2
Wazuh 4.9.0
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-61800 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 201 34.30%
DE 58 9.90%
ID 42 7.17%
SG 40 6.83%
FR 33 5.63%
IN 30 5.12%
GB 26 4.44%
CA 11 1.88%
BR 10 1.71%
NL 8 1.37%

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CVE-2026-61800 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 436 91.40%
Telecommunications 26 5.45%
Government/Politics 6 1.26%
Education 4 0.84%
Manufacturing 2 0.42%
Business Services 2 0.42%
Tourism/Hospitality 1 0.21%

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