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    CVE-2026-33754

    Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 3.9.0 and above, prior to 4.14.5, a remote attacker can trigger memory exhaustion in the cluster protocol parser by sending a crafted message header with an arbitrarily large payload length. The length is trusted before authentication/decryption and used directly to allocate memory, allowing unauthenticated denial of service of the cluster service. This issue has been fixed in version 4.14.5.

    Published:Jul 16, 2026
    Last Modified:Jul 17, 2026
    EPS:Jul 16, 2026
    EPSS Score:0.00219
    CVSS Score:6.5

    Affected Products

    Vendor
    Wazuh
    Product
    Wazuh

    Exploits

    https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High