What is CVE-2017-4905?

CVE-2017-4905 is a medium-severity vulnerability in Apple Mac OS X, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2017-06-07.

How severe is CVE-2017-4905?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2017-4905 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apple Mac OS X

CVE-2017-4905

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.

Published 2017-06-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (68.0th percentile), scored 2026-10-24.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Apple Mac OS X
VMware Esxi — versions 5.5 without patch ESXi550-201703401-SG, 5.5, 6.0 U2 without patch ESXi600-201703403-SG
VMware Fusion
VMware Fusion Pro
VMware Fusion Pro / — versions 8.x prior to 8.5.6
VMware Workstation Player
VMware Workstation Pro
VMware Workstation Pro / Player — versions 12.x prior to 12.5.5

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

Public proof-of-concept exploits

References

www.securityfocus.com/bid/97164 (VDB Entry, Third Party Advisory, vdb-entry)
www.vmware.com/security/advisories/VMSA-2017-0006.html (Patch, Vendor Advisory)
www.securitytracker.com/id/1038148 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1038149 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-4905?: CVE-2017-4905 is a medium-severity vulnerability in Apple Mac OS X, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2017-06-07.
How severe is CVE-2017-4905?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2017-4905 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.