What’s Vulnerable › Vulnerabilities

CVE-2023-43000: Apple Multiple products Use-After-Free Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-03-05
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-05 · updated 2026-09-21
• Weakness: CWE-416

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.

Affected products

• Apple iPadOS: before 15.8.7; from 16.0 before 16.6 — fixed in 15.8.7, 16.6
• Apple Iphone Os: before 15.8.7; from 16.0 before 16.6 — fixed in 15.8.7, 16.6
• Apple macOS: before 13.5 — fixed in 13.5
• Apple Safari: before 16.6 — fixed in 16.6

How to fix

Upgrade to a fixed version: Apple iPadOS 15.8.7, 16.6; Apple Iphone Os 15.8.7, 16.6; Apple macOS 13.5; Apple Safari 16.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/120324
• https://support.apple.com/en-us/120331
• https://support.apple.com/en-us/120338
• https://support.apple.com/en-us/126632
• https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000

Get alerted when CVE-2023-43000 or the next vulnerability affects your stack