CVE-2020-27949
This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina,...
- Published
- Apr 2, 2021
- Updated
- Aug 4, 2024
- Assigning CNA
- apple
- Evidence observed
- Aug 4, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NLow · next 30 days
- Percentile
- 60.1%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.
Sources
1Proof-of-concept exploit for CVE-2020-27949, demonstrating arbitrary memory read/write in macOS processes via DTrace fasttrap ioctl without elevated permissions.
Responsible use
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