{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2026-28318",
  "revision": 1,
  "title": "SolarWinds Serv-U — unauthenticated crash via compressed request",
  "summary": "SolarWinds Serv-U crashes when it is sent a crafted request that declares deflate compression, and no sign-in is needed to send one — so anyone who can reach the file transfer service can take it down.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 7.5,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "version": "3.1"
  },
  "epss": 0.40012,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2026-06-05",
    "prerequisites": "Network access to the Serv-U service; no credentials needed."
  },
  "remediation": {
    "patch_available": true,
    "workaround_available": true
  },
  "mitre_attack": [
    "T1499"
  ],
  "kill_chain": "impact",
  "recommended_action": "Update Serv-U to the 15.5.4 hotfix release now; where you cannot, apply the mitigation in the SolarWinds Trust Center and keep the service off the public internet.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-28318",
      "retrieved_at": "2026-09-24T06:28:59.498Z",
      "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": "2026-09-24T06:28:59.498Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2026-28318",
      "retrieved_at": "2026-09-24T06:28:59.498Z",
      "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-2026-28318",
      "retrieved_at": "2026-09-24T06:28:59.498Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28318",
      "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://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318"
    }
  ],
  "published_at": "2026-06-04T15:16:50.407Z",
  "issued_at": "2026-09-24T06:28:59.498Z",
  "tags": [
    "solarwinds",
    "serv-u",
    "file-transfer",
    "denial-of-service",
    "kev"
  ]
}