What is CVE-2021-1822?

CVE-2021-1822 is a medium-severity vulnerability in Apple iOS And Ipados. CVSS score: 5.5/10. Published 2021-09-08.

How severe is CVE-2021-1822?

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

Vulnerability in Apple iOS And Ipados

CVE-2021-1822

A logic issue was addressed with improved restrictions. This issue is fixed in iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. A local user may be able to modify protected parts of the file system.

Published 2021-09-08 · 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:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

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

References

support.apple.com/en-us/HT212317 (Vendor Advisory)
support.apple.com/en-us/HT212323 (Vendor Advisory)
support.apple.com/en-us/HT212324 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-1822?: CVE-2021-1822 is a medium-severity vulnerability in Apple iOS And Ipados. CVSS score: 5.5/10. Published 2021-09-08.
How severe is CVE-2021-1822?: Medium severity. CVSS v3 base score is 5.5 out of 10.