CVE-2023-40396
HIGHCVSS 7.8/10EPSS 0.22%
Last modified
CVE-2023-40396 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 17.0 |
| Apple | Iphone Os | < 17.0 |
| Apple | Macos | < 14.0 |
| Apple | Tvos | < 17.0 |
| Apple | Watchos | < 10.0 |
References
- https://support.apple.com/en-us/HT213936Vendor Advisory
- https://support.apple.com/en-us/HT213937Vendor Advisory
- https://support.apple.com/en-us/HT213938Vendor Advisory
- https://support.apple.com/en-us/HT213940Vendor Advisory
- https://support.apple.com/en-us/HT213936Vendor Advisory
- https://support.apple.com/en-us/HT213937Vendor Advisory
- https://support.apple.com/en-us/HT213938Vendor Advisory
- https://support.apple.com/en-us/HT213940Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2023-40396?
CVE-2023-40396 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2023-40396?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2023-40396?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST