{
  "id": "cve-2026-20182",
  "cveID": "CVE-2026-20182",
  "vendor": "Cisco",
  "product": "Catalyst SD-WAN",
  "vulnerabilityName": "Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability",
  "shortDescription": "Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.",
  "requiredAction": "Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlined in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.",
  "dateAdded": "2026-05-14",
  "dueDate": "2026-05-17",
  "knownRansomware": false,
  "cwes": [
    "CWE-287"
  ],
  "notes": "CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW ; https://nvd.nist.gov/vuln/detail/CVE-2026-20182",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20182"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "cisa.gov",
      "url": "https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems"
    },
    {
      "label": "cisa.gov",
      "url": "https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems"
    },
    {
      "label": "sec.cloudapps.cisco.com",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20182"
    }
  ],
  "cvss": {
    "score": 10,
    "severity": "CRITICAL",
    "version": "3.1",
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
  },
  "epss": {
    "score": 0.91522,
    "percentile": 0.99805
  },
  "timeline": [
    {
      "date": "2026-05-14",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2026-05-17",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}