What’s Vulnerable › Vulnerabilities

CVE-2020-27919

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% 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-787

Description

An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. Processing a maliciously crafted image may lead to arbitrary code execution.

Affected products

• macOS: before 11.0.1; before 11.1.0 — fixed in 11.0.1, 11.1.0

How to fix

Upgrade to a fixed version: macOS 11.0.1, 11.1.0. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT211931
• https://support.apple.com/en-us/HT212011
• https://support.apple.com/en-us/HT211931
• https://support.apple.com/en-us/HT212011

Get alerted when CVE-2020-27919 or the next vulnerability affects your stack