CVE-2017-4905: VMware ESXi

Medium severity, CVSS 5.5. EPSS: 1.2% chance of exploitation in the next 30 days.

VMware ESXi 6.5 without patch ESXi650-201703410-SG, 6.0 U3 without patch ESXi600-201703401-SG, 6.0 U2 without patch ESXi600-201703403-SG, 6.0 U1 without patch ESXi600-201703402-SG, 5.5 without patch ESXi550-201703401-SG; Workstation Pro / Player 12.x prior to 12.5.5; and Fusion Pro / Fusion 8.x prior to 8.5.6 have uninitialized memory usage. This issue may lead to an information leak.

Affected products

• VMware ESXi: version 5.5 only; version 6.0 only; version 6.5 only
• VMware Fusion: from 8.0.0, before 8.5.6 (fixed in 8.5.6)
• VMware Fusion Pro: from 8.0.0, before 8.5.6 (fixed in 8.5.6)
• VMware Workstation Player: from 12.0.0, before 12.5.5 (fixed in 12.5.5)
• VMware Workstation Pro: from 12.0.0, before 12.5.5 (fixed in 12.5.5)

Published 2017-06-07. Last modified 2026-06-17.