{
    "id": "CVE-2011-2165",
    "published": "2011-05-23 22:55:01",
    "last_modified": "2026-06-16 23:30:50",
    "cvss_score": "6.8",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
    "cwe": "CWE-264",
    "description": "The STARTTLS implementation in WatchGuard XCS 9.0 and 9.1 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions by sending a cleartext command that is processed after TLS is in place, related to a \"plaintext command injection\" attack, a similar issue to CVE-2011-0411.",
    "epss_score": "0.05156",
    "epss_percentile": "0.92178",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-02 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "watchguard",
            "product": "xcs"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "37440",
            "title": "Watchguard XCS 10.0 - Multiple Vulnerabilities",
            "date": "2015-06-30",
            "url": "https://www.exploit-db.com/exploits/37440"
        }
    ],
    "refs_list": [
        "http://secunia.com/advisories/44753",
        "http://www.kb.cert.org/vuls/id/555316",
        "http://www.kb.cert.org/vuls/id/MAPG-8D9M75",
        "http://www.watchguard.com/support/release-notes/xcs/9/en-US/EN_ReleaseNotes_XCS_9_1_1/EN_ReleaseNotes_WG_XCS_9_1_TLS_Hotfix.pdf",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/67729",
        "http://secunia.com/advisories/44753",
        "http://www.kb.cert.org/vuls/id/555316",
        "http://www.kb.cert.org/vuls/id/MAPG-8D9M75",
        "http://www.watchguard.com/support/release-notes/xcs/9/en-US/EN_ReleaseNotes_XCS_9_1_1/EN_ReleaseNotes_WG_XCS_9_1_TLS_Hotfix.pdf",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/67729"
    ]
}