Wazuh File Integrity Monitoring (FIM) & Active Response Arbitrary File Deletion as SYSTEM_CVE-2025-34294

{
    "lastseen": "",
    "description": "Wazuh's File Integrity Monitoring (FIM), when configured with automatic threat removal, contains a time-of-check/time-of-use (TOCTOU) race condition that can allow a local, low-privileged attacker to cause the Wazuh service (running as NT AUTHORITY\\SYSTEM) to delete attacker-controlled files or paths. The root cause is insufficient synchronization and lack of robust final-path validation in the threat-removal workflow: the agent records an active-response action and proceeds to perform deletion without guaranteeing the deletion target is the originally intended file. This can result in SYSTEM-level arbitrary file or folder deletion and consequent local privilege escalation. Wazuh made an attempted fix via pull request 8697 on 2025-07-10, but that change was incomplete.",
    "published": "2025-10-28T15:48:15.981Z",
    "modified": "2025-10-28T18:21:22.793Z",
    "type": "cve",
    "title": "Wazuh File Integrity Monitoring (FIM) & Active Response Arbitrary File Deletion as SYSTEM",
    "source": "VulnCheck",
    "references": "https://wazuh.com/blog/detecting-and-responding-to-malicious-files-using-cdb-lists-and-active-response/\nhttps://documentation.wazuh.com/current/user-manual/capabilities/active-response/index.html\nhttps://github.com/wazuh/wazuh-documentation/pull/8697\nhttps://www.vulncheck.com/advisories/wazuh-file-integrity-monitoring-and-active-response-arbitrary-file-deletion-as-system",
    "id": "CVE-2025-34294",
    "bulletinFamily": "",
    "cwe": [
        "CWE-367"
    ],
    "cvelist": null,
    "sourceData": "Wazuh, Inc. Wazuh 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.1,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Wazuh",
    "version": "0",
    "vendor": "Wazuh, Inc.",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}