What’s Vulnerable › Vulnerabilities

CVE-2021-30786

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% 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-362

Description

A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.

Affected products

• Apple Iphone Os: before 14.7 — fixed in 14.7
• Apple macOS: from 11.0 before 11.5 — fixed in 11.5

How to fix

Upgrade to a fixed version: Apple Iphone Os 14.7; Apple macOS 11.5. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT212601
• https://support.apple.com/en-us/HT212602
• https://support.apple.com/en-us/HT212601
• https://support.apple.com/en-us/HT212602

Get alerted when CVE-2021-30786 or the next vulnerability affects your stack