Vulnerability in VMware Cloud Foundation
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (49.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- VMware Cloud Foundation — versions 9.1.x.x, 9.0.x.x, 5.x
- VMware Telco Cloud Infrastructure — versions 3.0
- VMware Telco Cloud Platform — versions 5.1.x, 5.0.x, 4.x
- VMware Vcenter — versions 9.1.x.x, 9.0.x.x, 8.0
- VMware Vcenter Server — versions 8.0
- VMware Vsphere Foundation — versions 9.1.x.x, 9.0.x.x
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-59309?
- CVE-2026-59309 is a critical-severity vulnerability in VMware Cloud Foundation, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 9.8/10. Published 2026-07-30.
- How severe is CVE-2026-59309?
- Critical severity. CVSS v3 base score is 9.8 out of 10.