Columbia Weather Systems MicroServer Improper Restriction of Communication Channel to Intended Endpoints_CVE-2025-61939

{
    "lastseen": "",
    "description": "An unused function in MicroServer can start a reverse SSH connection to a vendor registered domain, without mutual authentication. An attacker on the local network with admin access to the web server, and the ability to manipulate DNS responses, can redirect the SSH connection to an attacker controlled device.",
    "published": "2026-01-07T19:56:52.386Z",
    "modified": "2026-01-07T20:07:45.479Z",
    "type": "cve",
    "title": "Columbia Weather Systems MicroServer Improper Restriction of Communication Channel to Intended Endpoints",
    "source": "icscert",
    "references": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-006-01\nhttps://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-006-01.json",
    "id": "CVE-2025-61939",
    "bulletinFamily": "",
    "cwe": [
        "CWE-923"
    ],
    "cvelist": null,
    "sourceData": "Columbia Weather Systems MicroServer 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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": "MicroServer",
    "version": "0",
    "vendor": "Columbia Weather Systems",
    "ai_description": "Improper restriction of communication channel to intended endpoints in MicroServer, allowing an attacker to redirect the SSH connection to an attacker-controlled device.",
    "ai_severity": "High",
    "ai_vendor": "Columbia Weather Systems",
    "ai_product": "MicroServer",
    "ai_version": "0",
    "ai_score": 8.7
}