Junos OS: SRX Series: Specifically malformed SSL packet causes FPC crash_CVE-2026-21917

{
    "lastseen": "",
    "description": "An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\nIf an SRX device configured for UTM Web-Filtering receives a specifically malformed SSL packet, this will cause an FPC crash and restart.\nThis issue affects Junos OS on SRX Series:\n\n\n\n  *  23.2 versions from 23.2R2-S2 before 23.2R2-S5,\u00a0\n  *  23.4 versions from 23.4R2-S1 before 23.4R2-S5,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R1-S3, 24.4R2.\n\n\nEarlier versions of Junos are also affected, but no fix is available.",
    "published": "2026-01-15T20:27:11.214Z",
    "modified": "2026-01-15T20:27:11.214Z",
    "type": "cve",
    "title": "Junos OS: SRX Series: Specifically malformed SSL packet causes FPC crash",
    "source": "juniper",
    "references": "https://supportportal.juniper.net/JSA105996\nhttps://kb.juniper.net/JSA105996",
    "id": "CVE-2026-21917",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1286"
    ],
    "cvelist": null,
    "sourceData": "Juniper Networks Junos OS 23.2R2-S2\nJuniper Networks Junos OS 23.4R2-S1\nJuniper Networks Junos OS 24.2\nJuniper Networks Junos OS 24.4",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Junos OS",
    "version": "23.2R2-S2",
    "vendor": "Juniper Networks",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}