High severity7.5NVD Advisory· Published Sep 8, 2021· Updated Jun 17, 2026
CVE-2021-1784
CVE-2021-1784
Description
A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave+ 1 more
- (no CPE)range: Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave
- (no CPE)range: unspecified
Patches
Vulnerability mechanics
References
3- support.apple.com/en-us/HT212325nvdVendor Advisory
- support.apple.com/en-us/HT212326nvdVendor Advisory
- support.apple.com/en-us/HT212327nvdVendor Advisory
News mentions
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