What’s Vulnerable › Vulnerabilities

CVE-2020-9816

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-09 · updated 2026-06-17
• Weakness: CWE-787

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.

Affected products

• Apple iPadOS: before 13.5 — fixed in 13.5
• Apple Iphone Os: before 13.5 — fixed in 13.5
• macOS: before 10.15.5 — fixed in 10.15.5
• Apple tvOS: before 13.4.5 — fixed in 13.4.5
• Apple watchOS: before 6.2.5 — fixed in 6.2.5

How to fix

Upgrade to a fixed version: Apple iPadOS 13.5; Apple Iphone Os 13.5; macOS 10.15.5; Apple tvOS 13.4.5; Apple watchOS 6.2.5. Check the vendor advisory for mitigations.

References

• https://support.apple.com/HT211168
• https://support.apple.com/HT211170
• https://support.apple.com/HT211171
• https://support.apple.com/HT211175
• https://support.apple.com/HT211168
• https://support.apple.com/HT211170
• https://support.apple.com/HT211171
• https://support.apple.com/HT211175

Get alerted when CVE-2020-9816 or the next vulnerability affects your stack