CVE-2026-59309

CRITICALCVSS 9.8/10EPSS 8.18%

Last modified

CVE-2026-59309 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 8.18% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
8.18%

94.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
VmwareVcenter Server< 8.0
VmwareVcenter Server8.0
VmwareVcenter Server>= 9.0, < 9.0.2.0100
VmwareVcenter Server>= 9.1, < 9.1.0.0300

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-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.
How severe is CVE-2026-59309?
CVE-2026-59309 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-59309?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST