CVE-2017-4905

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-06-07 · updated 2026-06-17
Weakness: CWE-908

Description

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: 5.5-1, 5.5-2, 5.5-3a, 5.5-3b, 6.0-1, 6.0-1a (+4); 5.5, 6.0, 6.5
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
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
VMware Fusion Pro / Fusion: from 8.x prior through 8.5.6
VMware Workstation Pro / Player: from 12.x prior through 12.5.5

How to fix

Upgrade to a fixed version: VMware Fusion 8.5.6; VMware Fusion Pro 8.5.6; VMware Workstation Player 12.5.5; VMware Workstation Pro 12.5.5. Check the vendor advisory for mitigations.

References

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