What’s Vulnerable › Vulnerabilities
CVE-2020-9990
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-10-22 · updated 2026-06-17
- Weakness: CWE-362
Description
A race condition was addressed with additional validation. This issue is fixed in macOS Catalina 10.15.6. A malicious application may be able to execute arbitrary code with kernel privileges.
Affected products
- macOS: before 10.5.6 — fixed in 10.5.6
How to fix
Upgrade to a fixed version: macOS 10.5.6. Check the vendor advisory for mitigations.
References
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