FKIE_CVE-2026-28318

Vulnerability from fkie_nvd - Published: 2026-06-04 15:16 - Updated: 2026-07-22 20:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update
References
psirt@solarwinds.comhttps://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htmRelease Notes
psirt@solarwinds.comhttps://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318US Government Resource
Impacted products
Vendor Product Version
solarwinds serv-u *
solarwinds serv-u 15.5.4
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Linux"
          ],
          "product": "Serv-U",
          "vendor": "SolarWinds",
          "versions": [
            {
              "status": "affected",
              "version": "15.5.4 and previous versions"
            }
          ]
        }
      ],
      "source": "psirt@solarwinds.com"
    }
  ],
  "cisaActionDue": "2026-06-19",
  "cisaExploitAdd": "2026-06-05",
  "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0879DDA2-3F57-41C7-A689-4B904310687E",
              "versionEndExcluding": "15.5.4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:solarwinds:serv-u:15.5.4:-:*:*:*:*:*:*",
              "matchCriteriaId": "04BC76FB-A18F-4D63-BF35-71E95E1447C0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update"
    },
    {
      "lang": "es",
      "value": "SolarWinds Serv-U es susceptible a solicitudes POST especialmente dise\u00f1adas que bloquean el servicio Serv-U sin autenticaci\u00f3n utilizando Content-Encoding: deflate. Se proporcionan pasos de mitigaci\u00f3n para proteger los entornos de los clientes en el Centro de Confianza de SolarWinds si no puede implementar la actualizaci\u00f3n."
    }
  ],
  "id": "CVE-2026-28318",
  "lastModified": "2026-07-22T20:10:00.127",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "psirt@solarwinds.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-28318",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-05T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-04T15:16:50.407",
  "references": [
    {
      "source": "psirt@solarwinds.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm"
    },
    {
      "source": "psirt@solarwinds.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318"
    }
  ],
  "sourceIdentifier": "psirt@solarwinds.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "psirt@solarwinds.com",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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