What’s Vulnerable › Vulnerabilities

CVE-2020-9930

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-02 · updated 2026-06-17
• Weakness: CWE-125

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra. A local user may be able to cause unexpected system termination or read kernel memory.

Affected products

• macOS: before 10.13.6; from 10.14 before 10.14.6; from 10.15 before 10.15.6; 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, 10.15.6

How to fix

Upgrade to a fixed version: macOS 10.13.6, 10.14.6, 10.15.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT211289
• https://support.apple.com/en-us/HT211289

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