{
    "id": "CVE-2023-2868",
    "published": "2023-05-24 19:15:09",
    "last_modified": "2026-06-17 05:53:39",
    "cvss_score": "9.4",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
    "cwe": "CWE-20",
    "description": "A remote command injection vulnerability exists in the Barracuda Email Security Gateway (appliance form factor only) product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file (tape archives). The vulnerability stems from incomplete input validation of a user-supplied .tar file as it pertains to the names of the files contained within the archive. As a consequence, a remote attacker can specifically format these file names in a particular manner that will result in remotely executing a system command through Perl's qx operator with the privileges of the Email Security Gateway product. This issue was fixed as part of BNSF-36456 patch. This patch was automatically applied to all customer appliances.",
    "epss_score": "0.87691",
    "epss_percentile": "0.99756",
    "kev": 1,
    "kev_due": "2023-06-16",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:31:48",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2023-06-16."
    },
    "products": [
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_300"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_300_firmware"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_400"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_400_firmware"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_600"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_600_firmware"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_800"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_800_firmware"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_900"
        },
        {
            "vendor": "barracuda",
            "product": "email_security_gateway_900_firmware"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2023-2868",
        "date_added": "2023-05-26",
        "due_date": "2023-06-16",
        "vendor": "Barracuda Networks",
        "product": "Email Security Gateway (ESG) Appliance",
        "name": "Barracuda Networks ESG Appliance Improper Input Validation Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://status.barracuda.com/incidents/34kx82j5n4q9",
        "https://www.barracuda.com/company/legal/esg-vulnerability",
        "https://status.barracuda.com/incidents/34kx82j5n4q9",
        "https://www.barracuda.com/company/legal/esg-vulnerability",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2868"
    ]
}