Out-of-bounds Read in Apple macOS
CVE-2020-3877
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
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:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Apple macOS — versions unspecified
- Apple Mac OS X
- Apple watchOS — versions unspecified
Weakness classification (CWE)
References
- support.apple.com/HT210919 (Release Notes, Vendor Advisory)
- support.apple.com/HT210921 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3877?
- CVE-2020-3877 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2020-02-27.
- How severe is CVE-2020-3877?
- High severity. CVSS v3 base score is 7.5 out of 10.