What is CVE-2017-7126?

CVE-2017-7126 is a critical-severity vulnerability in Apple Mac OS X, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2017-10-23.

How severe is CVE-2017-7126?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Improper input validation in Apple Mac OS X

CVE-2017-7126

An issue was discovered in certain Apple products. macOS before 10.13 is affected. The issue involves the third-party "file" product. Versions before 5.30 allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2017-10-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.026 (84.8th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Apple Mac OS X

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securityfocus.com/bid/100993 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT208144 (Vendor Advisory)
www.securitytracker.com/id/1038249 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-7126?: CVE-2017-7126 is a critical-severity vulnerability in Apple Mac OS X, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2017-10-23.
How severe is CVE-2017-7126?: Critical severity. CVSS v3 base score is 9.8 out of 10.