What is CVE-2019-8702?

CVE-2019-8702 is a medium-severity vulnerability in Apple iOS, classified under Exposure of Resource to Wrong Sphere. CVSS score: 5.5/10. Published 2021-12-23.

How severe is CVE-2019-8702?

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

Vulnerability in Apple iOS

CVE-2019-8702

This issue was addressed with a new entitlement. This issue is fixed in macOS Mojave 10.14.6, Security Update 2019-004 High Sierra, Security Update 2019-004 Sierra, iOS 12.4, tvOS 12.4. A local user may be able to read a persistent account identifier.

Published 2021-12-23 · 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: 0.002 (13.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Apple iOS — versions unspecified
Apple Iphone OS
Apple macOS — versions unspecified
Apple Mac OS X — versions 10.12.6, 10.13.6
Apple tvOS

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

support.apple.com/en-us/HT210348 (Vendor Advisory)
support.apple.com/en-us/HT210346 (Vendor Advisory)
support.apple.com/en-us/HT210351 (Vendor Advisory)

Frequently asked questions

What is CVE-2019-8702?: CVE-2019-8702 is a medium-severity vulnerability in Apple iOS, classified under Exposure of Resource to Wrong Sphere. CVSS score: 5.5/10. Published 2021-12-23.
How severe is CVE-2019-8702?: Medium severity. CVSS v3 base score is 5.5 out of 10.