{
    "id": "CVE-2023-36847",
    "published": "2023-08-17 20:15:10",
    "last_modified": "2026-06-17 06:07:13",
    "cvss_score": "5.3",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
    "cwe": "CWE-306",
    "description": "A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.\n\n\n\n\n\nWith a specific request to installAppPackage.php that doesn't require authentication an attacker is able to upload arbitrary files via J-Web, leading to a loss of \n\nintegrity\n\nfor a certain \n\npart of the file system, which may allow chaining to other vulnerabilities.\n\n\nThis issue affects Juniper Networks Junos OS on EX Series:\n\n\n\n  *  All versions prior to 20.4R3-S8;\n  *  21.1 versions 21.1R1 and later;\n  *  21.2 versions prior to 21.2R3-S6;\n  *  21.3 versions \n\nprior to \n\n 21.3R3-S5;\n  *  21.4 versions \n\nprior to \n\n21.4R3-S4;\n  *  22.1 versions \n\nprior to \n\n22.1R3-S3;\n  *  22.2 versions \n\nprior to \n\n22.2R3-S1;\n  *  22.3 versions \n\nprior to \n\n22.3R2-S2, 22.3R3;\n  *  22.4 versions \n\nprior to \n\n22.4R2-S1, 22.4R3.",
    "epss_score": "0.83455",
    "epss_percentile": "0.99676",
    "kev": 1,
    "kev_due": "2023-11-17",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:32:27",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2023-11-17."
    },
    "products": [
        {
            "vendor": "juniper",
            "product": "ex2200"
        },
        {
            "vendor": "juniper",
            "product": "ex2200-c"
        },
        {
            "vendor": "juniper",
            "product": "ex2200-vc"
        },
        {
            "vendor": "juniper",
            "product": "ex2300"
        },
        {
            "vendor": "juniper",
            "product": "ex2300-24mp"
        },
        {
            "vendor": "juniper",
            "product": "ex2300-24p"
        },
        {
            "vendor": "juniper",
            "product": "ex2300-24t"
        },
        {
            "vendor": "juniper",
            "product": "ex2300-48mp"
        },
        {
            "vendor": "juniper",
            "product": "ex2300-48p"
        },
        {
            "vendor": "juniper",
            "product": "ex2300-48t"
        },
        {
            "vendor": "juniper",
            "product": "ex2300-c"
        },
        {
            "vendor": "juniper",
            "product": "ex2300m"
        },
        {
            "vendor": "juniper",
            "product": "ex3200"
        },
        {
            "vendor": "juniper",
            "product": "ex3300"
        },
        {
            "vendor": "juniper",
            "product": "ex3300-vc"
        },
        {
            "vendor": "juniper",
            "product": "ex3400"
        },
        {
            "vendor": "juniper",
            "product": "ex4200"
        },
        {
            "vendor": "juniper",
            "product": "ex4200-vc"
        },
        {
            "vendor": "juniper",
            "product": "ex4300"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-24p"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-24p-s"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-24t"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-24t-s"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-32f"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-32f-dc"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-32f-s"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48mp"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48mp-s"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48p"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48p-s"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48t"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48t-afi"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48t-dc"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48t-dc-afi"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48t-s"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48tafi"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48tdc"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-48tdc-afi"
        },
        {
            "vendor": "juniper",
            "product": "ex4300-mp"
        },
        {
            "vendor": "juniper",
            "product": "junos"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2023-36847",
        "date_added": "2023-11-13",
        "due_date": "2023-11-17",
        "vendor": "Juniper",
        "product": "Junos OS",
        "name": "Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://supportportal.juniper.net/JSA72300",
        "https://supportportal.juniper.net/JSA72300",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36847"
    ]
}