What’s Vulnerable › Vulnerabilities
CVE-2020-3855
- Severity: high (CVSS 7.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-10-27 · updated 2026-06-17
Description
An access issue was addressed with improved access restrictions. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. A malicious application may be able to overwrite arbitrary files.
Affected products
- macOS: before 10.15.3 — fixed in 10.15.3
How to fix
Upgrade to a fixed version: macOS 10.15.3. Check the vendor advisory for mitigations.
References
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