What is CVE-2018-4310?

CVE-2018-4310 is a critical-severity vulnerability in Apple Iphone OS, classified under Improper Privilege Management. CVSS score: 10.0/10. Published 2019-04-03.

How severe is CVE-2018-4310?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2018-4310 known to be exploited?

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

Privilege escalation in Apple Iphone OS

CVE-2018-4310

An access issue was addressed with additional sandbox restrictions. This issue affected versions prior to iOS 12, macOS Mojave 10.14.

Vulnerability class: Privilege Escalation

Published 2019-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (79.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Apple Iphone OS
Apple Mac OS X
iOS, macOS — versions Versions prior to: iOS 12, macOS Mojave 10.14

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

Public proof-of-concept exploits

ChiChou/sploits

References

support.apple.com/kb/HT209193 (Vendor Advisory)
support.apple.com/kb/HT209106 (Vendor Advisory)
support.apple.com/kb/HT209139 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-4310?: CVE-2018-4310 is a critical-severity vulnerability in Apple Iphone OS, classified under Improper Privilege Management. CVSS score: 10.0/10. Published 2019-04-03.
How severe is CVE-2018-4310?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2018-4310 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.