{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-76504",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2026-08-19T12:02:03.641Z",
        "datePublished": "2026-09-30T13:04:32.095Z",
        "dateUpdated": "2026-09-30T19:58:23.436Z"
    },
    "containers": {
        "cna": {
            "title": "Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability",
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH"
                    }
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user.\r\n\r\nThis vulnerability is due to improper handling of URI encoding in an HTTP request, which allows the request to bypass an authentication rule that is intended to restrict access to a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted HTTP request to the API of the affected system. A successful exploit could allow the attacker to bypass authentication and gain access to the API as the admin user."
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-webauth-xr8beuuU",
                    "name": "cisco-sa-sdwan-webauth-xr8beuuU"
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "In September 2026, the Cisco PSIRT became aware of active exploitation of this vulnerability. Cisco strongly recommends that customers upgrade to a fixed software release to remediate this vulnerability."
                }
            ],
            "source": {
                "advisory": "cisco-sa-sdwan-webauth-xr8beuuU",
                "discovery": "EXTERNAL",
                "defects": [
                    "CSCww79570"
                ]
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Handling of URL Encoding (Hex Encoding)",
                            "type": "cwe",
                            "cweId": "CWE-177"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Cisco",
                    "product": "Cisco Catalyst SD-WAN Manager",
                    "versions": [
                        {
                            "version": "18.3.6",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.7",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.8",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.10",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.6.1",
                            "status": "affected"
                        },
                        {
                            "version": "18.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "18.4.3",
                            "status": "affected"
                        },
                        {
                            "version": "18.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.8",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "18.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.6",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.9",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.4",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.5",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.5",
                            "status": "affected"
                        },
                        {
                            "version": "18.4.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.7",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.4",
                            "status": "affected"
                        },
                        {
                            "version": "18.3.0",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }
            ],
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2026-09-30T13:04:32.095Z"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2026-76504",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "active"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2026-09-30T17:40:04.037537Z"
                            }
                        }
                    },
                    {
                        "other": {
                            "type": "kev",
                            "content": {
                                "dateAdded": "2026-09-30",
                                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76504"
                            }
                        }
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                ],
                "references": [
                    {
                        "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76504",
                        "tags": [
                            "government-resource"
                        ]
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-30T19:58:23.436Z"
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                "timeline": [
                    {
                        "time": "2026-09-30T00:00:00.000Z",
                        "lang": "en",
                        "value": "CVE-2026-76504 added to CISA KEV"
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    }
}