CVE-2021-1807

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-08 · updated 2026-06-17
Weakness: CWE-20

Description

A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 14.5 and iPadOS 14.5, watchOS 7.4. A local user may be able to write arbitrary files.

Affected products

Apple iPadOS: before 14.5 — fixed in 14.5
Apple Iphone Os: before 14.5 — fixed in 14.5
Apple watchOS: before 7.4 — fixed in 7.4

How to fix

Upgrade to a fixed version: Apple iPadOS 14.5; Apple Iphone Os 14.5; Apple watchOS 7.4. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/HT212317
https://support.apple.com/en-us/HT212324
https://support.apple.com/en-us/HT212317
https://support.apple.com/en-us/HT212324

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