What’s Vulnerable › Vulnerabilities

CVE-2020-9856

• Severity: medium (CVSS 5.3 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

Description

This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.5. An application may be able to gain elevated privileges.

Affected products

• macOS: from 10.13 before 10.13.6; from 10.14 before 10.14.6; from 10.15 before 10.15.5; 10.13.6, 10.13.6-security_update_2018-002, 10.13.6-security_update_2018-003, 10.13.6-security_update_2019-001, 10.13.6-security_update_2019-002, 10.13.6-security_update_2019-003 (+16) — fixed in 10.13.6, 10.14.6, 10.15.5

How to fix

Upgrade to a fixed version: macOS 10.13.6, 10.14.6, 10.15.5. Check the vendor advisory for mitigations.

References

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

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