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CVE-2020-9973

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17
• Weakness: CWE-125

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Catalina 10.15.7, Security Update 2020-005 High Sierra, Security Update 2020-005 Mojave, iOS 14.0 and iPadOS 14.0. Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution.

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

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. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2020/Nov/20
• http://seclists.org/fulldisclosure/2020/Nov/21
• https://support.apple.com/en-us/HT211849
• https://support.apple.com/en-us/HT211850
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1104
• http://seclists.org/fulldisclosure/2020/Nov/20
• http://seclists.org/fulldisclosure/2020/Nov/21
• https://support.apple.com/en-us/HT211849
• https://support.apple.com/en-us/HT211850
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1104

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