FKIE_CVE-2026-59309

Vulnerability from fkie_nvd - Published: 2026-07-30 13:16 - Updated: 2026-07-30 16:17
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service. A malicious actor with network access to vCenter may exploit this issue to bypass authentication and gain unauthorized access to the system.
References
security@vmware.comhttps://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Cloud Foundation",
          "vendor": "VMware",
          "versions": [
            {
              "status": "affected",
              "version": "9.1.x.x"
            },
            {
              "status": "affected",
              "version": "9.0.x.x"
            },
            {
              "status": "affected",
              "version": "5.x"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "vSphere Foundation",
          "vendor": "VMware",
          "versions": [
            {
              "status": "affected",
              "version": "9.1.x.x"
            },
            {
              "status": "affected",
              "version": "9.0.x.x"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "vCenter",
          "vendor": "VMware",
          "versions": [
            {
              "lessThan": "9.1.0.0300",
              "status": "affected",
              "version": "9.1.x.x",
              "versionType": "custom"
            },
            {
              "lessThan": "9.0.2.0100",
              "status": "affected",
              "version": "9.0.x.x",
              "versionType": "custom"
            },
            {
              "lessThan": "8.0 U3k",
              "status": "affected",
              "version": "8.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Telco Cloud Infrastructure",
          "vendor": "VMware",
          "versions": [
            {
              "status": "affected",
              "version": "3.0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Telco Cloud Platform",
          "vendor": "VMware",
          "versions": [
            {
              "status": "affected",
              "version": "5.1.x"
            },
            {
              "status": "affected",
              "version": "5.0.x"
            },
            {
              "status": "affected",
              "version": "4.x"
            },
            {
              "status": "affected",
              "version": "3.0"
            }
          ]
        }
      ],
      "source": "security@vmware.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service.\u00a0A malicious actor with network access to vCenter\u00a0may exploit this issue to bypass authentication and gain unauthorized access to the system."
    }
  ],
  "id": "CVE-2026-59309",
  "lastModified": "2026-07-30T16:17:15.073",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "security@vmware.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-59309",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-30T15:07:53.144480Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-30T13:16:53.870",
  "references": [
    {
      "source": "security@vmware.com",
      "url": "https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017"
    }
  ],
  "sourceIdentifier": "security@vmware.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-303"
        }
      ],
      "source": "security@vmware.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.

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.