Privilege escalation in Apple macOS
CVE-2021-1839
The issue was addressed with improved permissions logic. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A local attacker may be able to elevate their privileges.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (19.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Apple macOS — versions unspecified
- Apple Mac OS X — versions 10.14, 10.14.0, 10.14.1
Weakness classification (CWE)
References
- support.apple.com/en-us/HT212325 (Vendor Advisory)
- support.apple.com/en-us/HT212326 (Vendor Advisory)
- support.apple.com/en-us/HT212327 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1839?
- CVE-2021-1839 is a high-severity vulnerability in Apple macOS, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2021-09-08.
- How severe is CVE-2021-1839?
- High severity. CVSS v3 base score is 7.8 out of 10.