Vulnerability in Apple macOS
CVE-2021-1784
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.
EPSS: 0.020 (78.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Apple Macos — versions unspecified
- Apple Mac_os_x — versions 10.14.6, 10.15.6, 10.15.7
Public proof-of-concept exploits
References
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1784?
- CVE-2021-1784 is a high-severity vulnerability in Apple macOS. CVSS score: 7.5/10. Published 2021-09-08.
- How severe is CVE-2021-1784?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-1784 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.