CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2021-30858
High (8.8) in Apple iOS, iPadOS, and macOS. In CISA KEV since 2021-11-03. EPSS 13% chance of exploitation in the next 30 days.
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Severity
- EPSS
- 13% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2021-11-03, due 2021-11-17
- CWE
- CWE-416
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apple:ipados
- apple:iphone_os
- apple:macos
- debian:debian_linux
- fedoraproject:fedora