What is CVE-2023-40396?

CVE-2023-40396 is a high-severity vulnerability in Apple iOS And Ipados, classified under Command Injection. CVSS score: 7.8/10. Published 2024-07-29.

How severe is CVE-2023-40396?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Apple iOS And Ipados

CVE-2023-40396

The issue was addressed with improved memory handling. This issue is fixed in iOS 17 and iPadOS 17, macOS Sonoma 14, watchOS 10, tvOS 17. An app may be able to execute arbitrary code with kernel privileges.

Vulnerability class: Command Injection (OS Command Injection)

Published 2024-07-29 · last modified 2026-06-17.

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: 0.002 (11.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipados
Apple Iphone OS
Apple macOS — versions unspecified
Apple tvOS — versions unspecified
Apple watchOS — versions unspecified

Weakness classification (CWE)

CWE-77 — Command Injection

References

support.apple.com/en-us/HT213938 (Vendor Advisory)
support.apple.com/en-us/HT213936 (Vendor Advisory)
support.apple.com/en-us/HT213940 (Vendor Advisory)
support.apple.com/en-us/HT213937 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-40396?: CVE-2023-40396 is a high-severity vulnerability in Apple iOS And Ipados, classified under Command Injection. CVSS score: 7.8/10. Published 2024-07-29.
How severe is CVE-2023-40396?: High severity. CVSS v3 base score is 7.8 out of 10.