CVE-2023-34056: VMware vCenter Server Partial Information Disclosure Vulnerability

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-25 · updated 2026-06-17
Weakness: CWE-922

Description

vCenter Server contains a partial information disclosure vulnerability. A malicious actor with non-administrative privileges to vCenter Server may leverage this issue to access unauthorized data.

Affected products

VMware vCenter Server: from 4.0 through 5.5; 7.0, 7.0-a, 7.0-b, 7.0-c, 7.0-d, 7.0-update1 (+31)
VMware vCenter Server: from 8.0 before 8.0U2; from 7.0 before 7.0U3o — fixed in 8.0U2, 7.0U3o
VMware Cloud Foundation (VMware vCenter Server): 5.x, 4.x

How to fix

Upgrade to a fixed version: VMware vCenter Server 8.0U2, 7.0U3o. Check the vendor advisory for mitigations.

References

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