What is CVE-2017-4950?

CVE-2017-4950 is a high-severity vulnerability in Apple Mac OS X, classified under Integer Overflow or Wraparound. CVSS score: 7.0/10. Published 2018-01-11.

How severe is CVE-2017-4950?

High severity. CVSS v3 base score is 7.0 out of 10.

Integer overflow in Apple Mac OS X

CVE-2017-4950

VMware Workstation and Fusion contain an integer overflow vulnerability in VMware NAT service when IPv6 mode is enabled. This issue may lead to an out-of-bound read which can then be used to execute code on the host in conjunction with other issues. Note: IPv6 mode for VMNAT is not enabled by default.

Vulnerability class: Integer Overflow

Published 2018-01-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Apple Mac OS X
VMware Fusion — versions 10.x before 10.1.1, 8.x before 8.5.10
VMware Workstation
VMware Workstation Pro / Player — versions 14.x before 14.1.1, 12.x before 12.5.9

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

www.securitytracker.com/id/1040161 (VDB Entry, Third Party Advisory, vdb-entry)
www.vmware.com/security/advisories/VMSA-2018-0005.html (Patch, Vendor Advisory)
www.securityfocus.com/bid/102490 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-4950?: CVE-2017-4950 is a high-severity vulnerability in Apple Mac OS X, classified under Integer Overflow or Wraparound. CVSS score: 7.0/10. Published 2018-01-11.
How severe is CVE-2017-4950?: High severity. CVSS v3 base score is 7.0 out of 10.