{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2026-76504",
  "revision": 1,
  "title": "Cisco Catalyst SD-WAN Manager — Admin Authentication Bypass",
  "summary": "Cisco Catalyst software-defined wide area network (SD-WAN) Manager mishandles address encoding in web requests. An unauthenticated remote attacker can slip past an authentication rule and reach the programming interface as the admin user.",
  "source_type": "cve",
  "severity": "critical",
  "cvss": {
    "score": 9.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.38928,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2026-09-30",
    "kev_due": "2026-10-03",
    "prerequisites": "Network access to the Manager's programming interface. No account is needed."
  },
  "kill_chain": "initial_access",
  "recommended_action": "Apply the guidance in Cisco advisory cisco-sa-sdwan-webauth-xr8beuuU to every SD-WAN Manager.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "published_at",
        "references"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-76504",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added",
        "exploitation.kev_due"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2026-76504",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "subtitle",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-76504",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76504",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-webauth-xr8beuuU"
    }
  ],
  "published_at": "2026-09-30T13:17:20.247Z",
  "issued_at": "2026-11-05T08:06:18.021Z",
  "tags": [
    "cisco",
    "sd-wan",
    "authentication-bypass"
  ]
}