VMware vSphere Client 5.5 before U3e and 6.0 before U2a allows remote vCenter Server and ESXi instances to read arbitrary files via an XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.
Severity
CVSS 3.0
5.8 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
EPSS
1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)