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CVE-2020-9941

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17

Description

This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.7, Security Update 2020-005 High Sierra, Security Update 2020-005 Mojave. A remote attacker may be able to unexpectedly alter application state.

Affected products

• Apple iPadOS: before 14.0 — fixed in 14.0
• Apple Iphone Os: before 14.0 — fixed in 14.0
• macOS: from 10.13 before 10.13.6; from 10.14 before 10.14.6; from 10.15 before 10.15.7; 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 (+19) — fixed in 10.13.6, 10.14.6, 10.15.7
• Apple macOS: 11.0
• Apple watchOS: before 7.0 — fixed in 7.0

How to fix

Upgrade to a fixed version: Apple iPadOS 14.0; Apple Iphone Os 14.0; macOS 10.13.6, 10.14.6, 10.15.7; Apple watchOS 7.0. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2020/Dec/32
• http://seclists.org/fulldisclosure/2020/Nov/20
• http://seclists.org/fulldisclosure/2020/Nov/21
• http://seclists.org/fulldisclosure/2020/Nov/22
• https://support.apple.com/en-us/HT211849
• https://support.apple.com/kb/HT211844
• https://support.apple.com/kb/HT211850
• https://support.apple.com/kb/HT211931
• http://seclists.org/fulldisclosure/2020/Dec/32
• http://seclists.org/fulldisclosure/2020/Nov/20
• http://seclists.org/fulldisclosure/2020/Nov/21
• http://seclists.org/fulldisclosure/2020/Nov/22

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