What’s Vulnerable › Vulnerabilities

CVE-2025-43539

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-12 · updated 2026-10-07
• Weakness: CWE-787

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.

Affected products

• Apple macOS: before 14.8.3; from 15.0 before 15.7.3 — fixed in 14.8.3, 15.7.3

How to fix

Upgrade to a fixed version: Apple macOS 14.8.3, 15.7.3. Check the vendor advisory for mitigations.

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/125887
• https://support.apple.com/en-us/125888
• https://support.apple.com/en-us/125889
• https://support.apple.com/en-us/125890
• https://support.apple.com/en-us/125891

Get alerted when CVE-2025-43539 or the next vulnerability affects your stack