What’s Vulnerable › Vulnerabilities

CVE-2020-9837

• Severity: high (CVSS 7.5 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-125

Description

An out-of-bounds read 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. A remote attacker may be able to leak memory.

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

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

Get alerted when CVE-2020-9837 or the next vulnerability affects your stack