What’s Vulnerable › Vulnerabilities

CVE-2020-9997

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-22 · updated 2026-06-17

Description

An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Catalina 10.15.6, watchOS 6.2.8. A malicious application may disclose restricted memory.

Affected products

• macOS: before 10.15.6 — fixed in 10.15.6
• Apple watchOS: before 6.2.8 — fixed in 6.2.8

How to fix

Upgrade to a fixed version: macOS 10.15.6; Apple watchOS 6.2.8. Check the vendor advisory for mitigations.

References

• https://support.apple.com/kb/HT211289
• https://support.apple.com/kb/HT211291
• https://support.apple.com/kb/HT211289
• https://support.apple.com/kb/HT211291

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