Out-of-bounds Read in Apple macOS
CVE-2021-30719
A local user may be able to cause unexpected system termination or read kernel memory. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina. An out-of-bounds read issue was addressed by removing the vulnerable code.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.4% 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 10.15.7
Weakness classification (CWE)
References
- support.apple.com/en-us/HT212529 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212530 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-30719?
- CVE-2021-30719 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2021-09-08.
- How severe is CVE-2021-30719?
- High severity. CVSS v3 base score is 7.1 out of 10.