CVE-2023-23540

Name: CVE-2023-23540
Creator: NVD / NIST
Published: 2023-05-08T20:15:16.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2023-23540 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 15.7.8 and iPadOS 15.7.8, macOS Monterey 12.6.4, iOS 16.4 and iPadOS 16.4, macOS Big Sur 11.7.5. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 15.7.8 and iPadOS 15.7.8, macOS Monterey 12.6.4, iOS 16.4 and iPadOS 16.4, macOS Big Sur 11.7.5. An app may be able to execute arbitrary code with kernel privileges.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.29%

21.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Ipados	< 15.7.8
Apple	Ipados	>= 16.0, < 16.4
Apple	Iphone Os	< 15.7.8
Apple	Iphone Os	>= 16.0, < 16.4
Apple	Macos	< 11.7.5
Apple	Macos	>= 12.0, < 12.6.4

References

https://support.apple.com/en-us/HT213675Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213676Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213677Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213842Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213675Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213676Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213677Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213842Release Notes, Vendor Advisory

Timeline

Published: May 8, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-23540?

How severe is CVE-2023-23540?

CVE-2023-23540 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2023-23540?

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.

Are you affected by CVE-2023-23540?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST