Cisco Secure Web Appliance TBD Bypass Vulnerability_CVE-2026-20056

{
    "lastseen": "",
    "description": "A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded.\r\n\r\nThis vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file. ",
    "published": "2026-02-04T16:11:48.273Z",
    "modified": "2026-02-04T16:40:11.391Z",
    "type": "cve",
    "title": "Cisco Secure Web Appliance TBD  Bypass Vulnerability",
    "source": "cisco",
    "references": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF",
    "id": "CVE-2026-20056",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Cisco Cisco Secure Web Appliance 11.8.0-453\nCisco Cisco Secure Web Appliance 12.5.3-002\nCisco Cisco Secure Web Appliance 12.0.3-007\nCisco Cisco Secure Web Appliance 12.0.3-005\nCisco Cisco Secure Web Appliance 14.1.0-032\nCisco Cisco Secure Web Appliance 14.1.0-047\nCisco Cisco Secure Web Appliance 14.1.0-041\nCisco Cisco Secure Web Appliance 12.0.4-002\nCisco Cisco Secure Web Appliance 14.0.2-012\nCisco Cisco Secure Web Appliance 11.8.0-414\nCisco Cisco Secure Web Appliance 12.0.1-268\nCisco Cisco Secure Web Appliance 11.8.1-023\nCisco Cisco Secure Web Appliance 11.8.3-021\nCisco Cisco Secure Web Appliance 11.8.3-018\nCisco Cisco Secure Web Appliance 12.5.1-011\nCisco Cisco Secure Web Appliance 11.8.4-004\nCisco Cisco Secure Web Appliance 12.5.2-007\nCisco Cisco Secure Web Appliance 12.5.2-011\nCisco Cisco Secure Web Appliance 14.5.0-498\nCisco Cisco Secure Web Appliance 12.5.4-005\nCisco Cisco Secure Web Appliance 12.5.4-011\nCisco Cisco Secure Web Appliance 12.0.5-011\nCisco Cisco Secure Web Appliance 14.0.3-014\nCisco Cisco Secure Web Appliance 12.5.5-004\nCisco Cisco Secure Web Appliance 12.5.5-005\nCisco Cisco Secure Web Appliance 12.5.5-008\nCisco Cisco Secure Web Appliance 14.0.4-005\nCisco Cisco Secure Web Appliance 14.5.1-008\nCisco Cisco Secure Web Appliance 14.5.1-016\nCisco Cisco Secure Web Appliance 15.0.0-355\nCisco Cisco Secure Web Appliance 15.0.0-322\nCisco Cisco Secure Web Appliance 12.5.6-008\nCisco Cisco Secure Web Appliance 15.1.0-287\nCisco Cisco Secure Web Appliance 14.5.2-011\nCisco Cisco Secure Web Appliance 15.2.0-116\nCisco Cisco Secure Web Appliance 14.0.5-007\nCisco Cisco Secure Web Appliance 15.2.0-164\nCisco Cisco Secure Web Appliance 14.5.1-510\nCisco Cisco Secure Web Appliance 12.0.2-012\nCisco Cisco Secure Web Appliance 12.0.2-004\nCisco Cisco Secure Web Appliance 14.5.1-607\nCisco Cisco Secure Web Appliance 14.5.3-033\nCisco Cisco Secure Web Appliance 15.0.1-004\nCisco Cisco Secure Web Appliance 15.2.1-011\nCisco Cisco Secure Web Appliance 14.5.0-673\nCisco Cisco Secure Web Appliance 14.5.0-537\nCisco Cisco Secure Web Appliance 12.0.1-334\nCisco Cisco Secure Web Appliance 14.0.1-503\nCisco Cisco Secure Web Appliance 14.0.1-053\nCisco Cisco Secure Web Appliance 11.8.0-429\nCisco Cisco Secure Web Appliance 14.0.1-040\nCisco Cisco Secure Web Appliance 14.0.1-014\nCisco Cisco Secure Web Appliance 12.5.1-043\nCisco Cisco Secure Web Appliance 15.2.2-009\nCisco Cisco Secure Web Appliance 15.5.0-566\nCisco Cisco Secure Web Appliance 15.2.3-007\nCisco Cisco Secure Web Appliance 15.5.0-574\nCisco Cisco Secure Web Appliance 15.5.0-710\nCisco Cisco Secure Web Appliance 15.2.4-022\nCisco Cisco Secure Web Appliance 15.5.1-002",
    "sourceHref": "",
    "cvss": {
        "score": 4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
        "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": "",
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            "privilegesRequired": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Cisco Secure Web Appliance",
    "version": "11.8.0-453",
    "vendor": "Cisco",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}