Use After Free in Apple macOS
CVE-2020-3851
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra, macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to gain elevated privileges.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Apple macOS — versions unspecified
- Apple Mac OS X
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/HT211100 (Vendor Advisory)
- support.apple.com/en-us/HT210919 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3851?
- CVE-2020-3851 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 7.8/10. Published 2020-10-27.
- How severe is CVE-2020-3851?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-3851 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.