Vulnerability-Lookup

CVE-2026-28309 (GCVE-0-2026-28309)

Vulnerability from cvelistv5 – Published: 2026-07-21 15:34 – Updated: 2026-07-21 15:34

Title

SolarWinds Serv-U Broken Access Control Vulnerability

Summary

SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

4.7 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

CWE

CWE-862 - Missing Authorization

Assigner

SolarWinds

References

2 references

URL	Tags
https://https://www.solarwinds.com/trust-center/s…	vendor-advisory
https://documentation.solarwinds.com/en/success_c…	release-notes

Impacted products

1 product

Vendor	Product	Version
SolarWinds	Serv-U	Affected: 15.5.4 HF1 and below

Credits

Intigriti Bug Bounty Program

Show details on NVD website

JSON

To clipboard

{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Linux"
          ],
          "product": "Serv-U",
          "vendor": "SolarWinds",
          "versions": [
            {
              "status": "affected",
              "version": "15.5.4 HF1 and below"
            }
          ]
        }
      ],
      "credits": [
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          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Intigriti Bug Bounty Program"
        }
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              "lang": "en",
              "value": "CAPEC-233 Privilege Escalation"
            }
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
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          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "Serv-U Linux"
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              "value": "Serv-U Windows"
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        "dateUpdated": "2026-07-21T15:34:52.384Z",
        "orgId": "49f11609-934d-4621-84e6-e02e032104d6",
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        },
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          ],
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        }
      ],
      "solutions": [
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          "supportingMedia": [
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              "type": "text/html",
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            }
          ],
          "value": "SolarWinds recommends customers to upgrade to Serv-U version 2026.3 as soon as is practical."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "SolarWinds Serv-U Broken Access Control Vulnerability",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "SolarWinds",
    "cveId": "CVE-2026-28309",
    "datePublished": "2026-07-21T15:34:52.384Z",
    "dateReserved": "2026-02-26T14:28:17.157Z",
    "dateUpdated": "2026-07-21T15:34:52.384Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-07-22",
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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-28309\",\"sourceIdentifier\":\"psirt@solarwinds.com\",\"published\":\"2026-07-21T16:17:08.743\",\"lastModified\":\"2026-07-21T18:35:27.267\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments.\"}],\"affected\":[{\"source\":\"psirt@solarwinds.com\",\"affectedData\":[{\"vendor\":\"SolarWinds\",\"product\":\"Serv-U\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"Windows\",\"Linux\"],\"versions\":[{\"version\":\"15.5.4 HF1 and below\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@solarwinds.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":9.1,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.3,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"psirt@solarwinds.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"references\":[{\"url\":\"https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm\",\"source\":\"psirt@solarwinds.com\"},{\"url\":\"https://https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28309\",\"source\":\"psirt@solarwinds.com\"}]}}"
  }
}

FKIE_CVE-2026-28309

Vulnerability from fkie_nvd - Published: 2026-07-21 16:17 - Updated: 2026-07-21 18:35

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Summary

SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments.

References

	URL	Tags
	psirt@solarwinds.com	https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm
	psirt@solarwinds.com	https://https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28309

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Linux"
          ],
          "product": "Serv-U",
          "vendor": "SolarWinds",
          "versions": [
            {
              "status": "affected",
              "version": "15.5.4 HF1 and below"
            }
          ]
        }
      ],
      "source": "psirt@solarwinds.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments."
    }
  ],
  "id": "CVE-2026-28309",
  "lastModified": "2026-07-21T18:35:27.267",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 6.0,
        "source": "psirt@solarwinds.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-07-21T16:17:08.743",
  "references": [
    {
      "source": "psirt@solarwinds.com",
      "url": "https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm"
    },
    {
      "source": "psirt@solarwinds.com",
      "url": "https://https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28309"
    }
  ],
  "sourceIdentifier": "psirt@solarwinds.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "psirt@solarwinds.com",
      "type": "Primary"
    }
  ]
}

GHSA-VV5R-RFHV-VX6X

Vulnerability from github – Published: 2026-07-21 18:31 – Updated: 2026-07-21 18:31

Details

SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments.

Severity

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-28309"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-21T16:17:08Z",
    "severity": "CRITICAL"
  },
  "details": "SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments.",
  "id": "GHSA-vv5r-rfhv-vx6x",
  "modified": "2026-07-21T18:31:01Z",
  "published": "2026-07-21T18:31:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28309"
    },
    {
      "type": "WEB",
      "url": "https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm"
    },
    {
      "type": "WEB",
      "url": "https://https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28309"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-28309 (GCVE-0-2026-28309)

FKIE_CVE-2026-28309

GHSA-VV5R-RFHV-VX6X

Tags

Sightings

Nomenclature