{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2026-18556",
  "revision": 1,
  "title": "N-able N-central — authentication bypass via alternate path",
  "summary": "N-able N-central lets a remote attacker skip authentication by using an alternate path or channel into the product, gaining access to confidential data and the ability to alter it. Affects N-central through 2026.1 and is being exploited in the wild.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 7.4,
    "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
    "version": "3.1"
  },
  "epss": 0.40158,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "high",
    "kev_added": "2026-08-04",
    "prerequisites": "Network access to the N-central server; no credentials or user interaction needed, but the bypass path has high attack complexity."
  },
  "mitre_attack": [
    "T1190"
  ],
  "kill_chain": "initial_access",
  "recommended_action": "Apply the N-able N-central security update per the vendor advisory; limit network exposure of N-central and hunt for unauthenticated access.",
  "confidence": "medium",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-18556",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2026-18556",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-18556",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18556",
      "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://uptime.n-able.com/"
    },
    {
      "type": "vendor_advisory",
      "url": "https://www.n-able.com/blog/n-central-security-update-august-2-2026"
    }
  ],
  "published_at": "2026-08-01T20:16:37.157Z",
  "issued_at": "2026-09-22T06:10:25.213Z",
  "tags": [
    "n-able",
    "n-central",
    "authentication-bypass",
    "kev"
  ]
}