What is CVE-2021-30714?

CVE-2021-30714 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.3/10. Published 2021-09-08.

How severe is CVE-2021-30714?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Apple iOS And Ipados

CVE-2021-30714

A race condition was addressed with improved state handling. This issue is fixed in iOS 14.6 and iPadOS 14.6. An application may be able to cause unexpected system termination or write kernel memory.

Vulnerability class: Race Condition

Published 2021-09-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (41.6th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipados
Apple Iphone OS

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

support.apple.com/en-us/HT212528 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-30714?: CVE-2021-30714 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.3/10. Published 2021-09-08.
How severe is CVE-2021-30714?: Medium severity. CVSS v3 base score is 6.3 out of 10.