High (7.8) in Apple Multiple Products. In CISA KEV since 2021-11-03. EPSS 76% chance of exploitation in the next 30 days.
An integer overflow was addressed with improved input validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. Processing a maliciously crafted PDF may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Severity
CVSS 3.1
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
76% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)