Out-of-bounds Read in Apple macOS
CVE-2023-40436
The issue was addressed with improved bounds checks. This issue is fixed in macOS Sonoma 14. An attacker may be able to cause unexpected system termination or read kernel memory.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.013 · change: +0.003
Affected products
- Apple macOS — versions unspecified
Weakness classification (CWE)
References
- support.apple.com/en-us/HT213940 (Release Notes, Vendor Advisory)
- seclists.org/fulldisclosure/2023/Oct/3 (Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-40436?
- CVE-2023-40436 is a critical-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2023-09-27.
- How severe is CVE-2023-40436?
- Critical severity. CVSS v3 base score is 9.1 out of 10.