{
    "id": "CVE-2024-21894",
    "published": "2024-04-04 23:15:15",
    "last_modified": "2026-06-17 07:10:21",
    "cvss_score": "9.8",
    "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:H",
    "cwe": "CWE-787",
    "description": "A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows an unauthenticated malicious user to send specially crafted requests in-order-to crash the service thereby causing a DoS attack. In certain conditions this may lead to execution of arbitrary code ",
    "epss_score": "0.18987",
    "epss_percentile": "0.97228",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-03 18:17:42",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 19% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "ivanti",
            "product": "connect_secure"
        },
        {
            "vendor": "ivanti",
            "product": "policy_secure"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://forums.ivanti.com/s/article/SA-CVE-2024-21894-Heap-Overflow-CVE-2024-22052-Null-Pointer-Dereference-CVE-2024-22053-Heap-Overflow-and-CVE-2024-22023-XML-entity-expansion-or-XXE-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US",
        "https://forums.ivanti.com/s/article/SA-CVE-2024-21894-Heap-Overflow-CVE-2024-22052-Null-Pointer-Dereference-CVE-2024-22053-Heap-Overflow-and-CVE-2024-22023-XML-entity-expansion-or-XXE-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US"
    ]
}