SmarterTools SmarterMail < Build 9518 Unauthenticated background-of-the-day Path Coercion_CVE-2026-25067

{
    "lastseen": "",
    "description": "SmarterTools SmarterMail versions prior to build 9518  contain\u00a0an unauthenticated path coercion vulnerability in the background-of-the-day preview endpoint. The application base64-decodes attacker-supplied input and uses it as a filesystem path without validation. On Windows systems, this allows UNC paths to be resolved, causing the SmarterMail service to initiate outbound SMB authentication attempts to attacker-controlled hosts. This can be abused for credential coercion, NTLM relay attacks, and unauthorized network authentication.",
    "published": "2026-01-29T03:38:02.582Z",
    "modified": "2026-01-29T03:38:02.582Z",
    "type": "cve",
    "title": "SmarterTools SmarterMail < Build 9518 Unauthenticated background-of-the-day Path Coercion",
    "source": "VulnCheck",
    "references": "https://www.smartertools.com/smartermail/release-notes/current\nhttps://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-background-of-the-day-path-coercion",
    "id": "CVE-2026-25067",
    "bulletinFamily": "",
    "cwe": [
        "CWE-706"
    ],
    "cvelist": null,
    "sourceData": "SmarterTools SmarterMail 0",
    "sourceHref": "",
    "cvss": {
        "score": 6.9,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
        "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": "SmarterMail",
    "version": "0",
    "vendor": "SmarterTools",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}