What is CVE-2021-30968?

CVE-2021-30968 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2021-08-24.

How severe is CVE-2021-30968?

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

Vulnerability in Apple iOS And Ipados

CVE-2021-30968

A validation issue related to hard link behavior was addressed with improved sandbox restrictions. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. A malicious application may be able to bypass certain Privacy preferences.

Published 2021-08-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Iphone OS
Apple macOS — versions unspecified
Apple Mac OS X — versions 10.15.7
Apple tvOS
Apple watchOS — versions unspecified

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

Frequently asked questions

What is CVE-2021-30968?: CVE-2021-30968 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2021-08-24.
How severe is CVE-2021-30968?: Medium severity. CVSS v3 base score is 5.5 out of 10.