CVE-2021-30884

4.7 mediumEPSS 1.1%

Medium (4.7) in apple. EPSS 1.1% chance of exploitation in the next 30 days.

The issue was resolved with additional restrictions on CSS compositing. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Visiting a maliciously crafted website may reveal a user's browsing history.

Severity

CVSS 3.1

4.7 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)
Published: 2021-08-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

apple:ipados
apple:iphone_os
apple:macos
apple:tvos
apple:watchos

References

http://www.openwall.com/lists/oss-security/2021/12/20/6
https://support.apple.com/en-us/HT212814
https://support.apple.com/en-us/HT212815
https://support.apple.com/en-us/HT212819
https://support.apple.com/kb/HT212869

Check your stack JSON