CVE-2025-43539

Name: CVE-2025-43539
Creator: NVD / NIST
Published: 2025-12-12T21:15:57.583+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 5.71%

Last modified Jun 17, 2026

CVE-2025-43539 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Sequoia 15.7.3, macOS Sonoma 14.8.3, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. EPSS estimates a 5.71% chance of exploitation in the next 30 days.

Description

The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Sequoia 15.7.3, macOS Sonoma 14.8.3, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing a file may lead to memory corruption.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

5.71%

92.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apple	Macos	< 14.8.3
Apple	Macos	>= 15.0, < 15.7.3

References

https://support.apple.com/en-us/125884
https://support.apple.com/en-us/125885
https://support.apple.com/en-us/125886
https://support.apple.com/en-us/125887Release Notes, Vendor Advisory
https://support.apple.com/en-us/125888Release Notes, Vendor Advisory
https://support.apple.com/en-us/125889
https://support.apple.com/en-us/125890
https://support.apple.com/en-us/125891

Timeline

Published: Dec 12, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-43539?

How severe is CVE-2025-43539?

CVE-2025-43539 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 5.71% probability of exploitation in the next 30 days.

How do I fix CVE-2025-43539?

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-2025-43539?

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

Scan your code now

Source: NVD / NIST