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Vulnerabilities

Vulnerability · CVE-2026-59309

Critical VMware vCenter Vulnerabilities Allow Authentication Bypass and Remote Code Execution (CVE-2026-59309, CVE-2026-59310)

Published Jul 30, 2026 · catalog updated Aug 14, 2026 · VMware

Patch now

CVE-2026-59309 is in the CISA known-exploited catalog. Confirm VMware against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.61%
Remediation
Remediation guidance
Affected products
vendor VMware vcenter_server

Overview On July 29, 2026, Broadcom published security advisory VMSA-2026-0006 addressing multiple vulnerabilities in several VMWare products. Included in the advisory are two critical remotely exploitable vulnerabilities affecting VMware vCenter Server: CVE-2026-59309 and CVE-2026-59310 . Both vulnerabilities carry CVSSv3.1 base scores of 9.8 and can be exploited by unauthenticated attackers with network access to a vulnerable vCenter Server. CVE CVSSv3.1 Description Summary CVE-2026-59309 9.8 (Critical) An authentication bypass vulnerability in the VMware Directory Service of vCenter that co

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor VMware vcenter_serverversion unspecified

How to fix CVE-2026-59309

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-59309 is in the CISA known-exploited catalog. Confirm VMware against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 0.61%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 30, 2026 · Rapid7 Vulnerability Database

    Detected

    Overview On July 29, 2026, Broadcom published security advisory VMSA-2026-0006 addressing multiple vulnerabilities in several VMWare products. Included in the advisory are two critical remotely exploitable vulnerabilities affecting VMware vCenter Server: CVE-2026-59309 and CVE-2026-59310 . Both vulnerabilities carry CVSSv3.1 base scores of 9.8 and can be exploited by unauthenticated attackers with

  2. Aug 14, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  3. Aug 14, 2026 · VulnCheck KEV

    Updated

    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. Initial-access exploit intelligence.

Sources

  • CVE.orgVulnerability recordCVE-2026-59309

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-59309

    30-day exploitation probability 0.6%

    first.org
  • Google Cloud Security BulletinsVendor advisoryCVE-2026-59309

    Published: 2026-07-29 Description Description Severity Notes Per advisory VMSA-2026-0006, multiple vulnerabilities in VMware ESXi, and vCenter were privately reported to Broadcom. We are in the process of applying the necessary patches supplied by Broadcom. There are no known wor

    docs.cloud.google.com
  • Rapid7 Vulnerability DatabaseResearchCVE-2026-59309

    Overview On July 29, 2026, Broadcom published security advisory VMSA-2026-0006 addressing multiple vulnerabilities in several VMWare products. Included in the advisory are two critical remotely exploitable vulnerabilities affecting VMware vCenter Server: CVE-2026-59309 and CVE-2026-59310 . Both vulnerabilities carry CVSSv3.1 base scores of 9.8 and can be exploited by unauthenticated attackers with

    rapid7.com
  • VulnCheck KEVConfirmed exploitationCVE-2026-59309

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.