{
    "id": "CVE-2016-5309",
    "published": "2017-04-14 18:59:00",
    "last_modified": "2026-06-17 00:49:11",
    "cvss_score": "5.5",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
    "cwe": "CWE-125",
    "description": "The RAR file parser component in the AntiVirus Decomposer engine in Symantec Advanced Threat Protection: Network (ATP); Symantec Email Security.Cloud; Symantec Data Center Security: Server; Symantec Endpoint Protection (SEP) for Windows before 12.1.6 MP5; Symantec Endpoint Protection (SEP) for Mac; Symantec Endpoint Protection (SEP) for Linux before 12.1.6 MP6; Symantec Endpoint Protection for Small Business Enterprise (SEP SBE/SEP.Cloud); Symantec Endpoint Protection Cloud (SEPC) for Windows/Mac; Symantec Endpoint Protection Small Business Edition 12.1; CSAPI before 10.0.4 HF02; Symantec Protection Engine (SPE) before 7.0.5 HF02, 7.5.x before 7.5.4 HF02, 7.5.5 before 7.5.5 HF01, and 7.8.x before 7.8.0 HF03; Symantec Mail Security for Domino (SMSDOM) before 8.0.9 HF2.1, 8.1.x before 8.1.2 HF2.3, and 8.1.3 before 8.1.3 HF2.2; Symantec Mail Security for Microsoft Exchange (SMSMSE) before 6.5.8_3968140 HF2.3, 7.x before 7.0_3966002 HF2.1, and 7.5.x before 7.5_3966008 VHF2.2; Symantec Protection for SharePoint Servers (SPSS) before SPSS_6.0.3_To_6.0.5_HF_2.5 update, 6.0.6 before 6.0.6 HF_2.6, and 6.0.7 before 6.0.7_HF_2.7; Symantec Messaging Gateway (SMG) before 10.6.2; Symantec Messaging Gateway for Service Providers (SMG-SP) before 10.5 patch 260 and 10.6 before patch 259; Symantec Web Gateway; and Symantec Web Security.Cloud allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted RAR file that is mishandled during decompression.",
    "epss_score": "0.06877",
    "epss_percentile": "0.93852",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-30 18:17:15",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "broadcom",
            "product": "symantec_data_center_security_server"
        },
        {
            "vendor": "symantec",
            "product": "advanced_threat_protection"
        },
        {
            "vendor": "symantec",
            "product": "csapi"
        },
        {
            "vendor": "symantec",
            "product": "email_security.cloud"
        },
        {
            "vendor": "symantec",
            "product": "endpoint_protection"
        },
        {
            "vendor": "symantec",
            "product": "endpoint_protection_cloud"
        },
        {
            "vendor": "symantec",
            "product": "endpoint_protection_for_small_business"
        },
        {
            "vendor": "symantec",
            "product": "mail_security_for_domino"
        },
        {
            "vendor": "symantec",
            "product": "mail_security_for_microsoft_exchange"
        },
        {
            "vendor": "symantec",
            "product": "messaging_gateway"
        },
        {
            "vendor": "symantec",
            "product": "messaging_gateway_for_service_providers"
        },
        {
            "vendor": "symantec",
            "product": "protection_engine"
        },
        {
            "vendor": "symantec",
            "product": "protection_for_sharepoint_servers"
        },
        {
            "vendor": "symantec",
            "product": "web_gateway"
        },
        {
            "vendor": "symantec",
            "product": "web_security.cloud"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "40405",
            "title": "Symantec RAR Decomposer Engine (Multiple Products) - Out-of-Bounds Read / Out-of-Bounds Write",
            "date": "2016-09-21",
            "url": "https://www.exploit-db.com/exploits/40405"
        }
    ],
    "refs_list": [
        "http://www.securityfocus.com/bid/92868",
        "http://www.securitytracker.com/id/1036847",
        "http://www.securitytracker.com/id/1036848",
        "http://www.securitytracker.com/id/1036849",
        "http://www.securitytracker.com/id/1036850",
        "https://bugs.chromium.org/p/project-zero/issues/detail?id=867",
        "https://www.exploit-db.com/exploits/40405/",
        "https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160919_00",
        "http://www.securityfocus.com/bid/92868",
        "http://www.securitytracker.com/id/1036847",
        "http://www.securitytracker.com/id/1036848",
        "http://www.securitytracker.com/id/1036849",
        "http://www.securitytracker.com/id/1036850",
        "https://bugs.chromium.org/p/project-zero/issues/detail?id=867",
        "https://www.exploit-db.com/exploits/40405/",
        "https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160919_00"
    ]
}