Apple Multiple products Use-After-Free Vulnerability

HIGH 8.8EXPLOITED (CISA KEV)CVE-2023-43000 · Published 05/11/2025 · updated 28/10/2026

Apple Multiple products Use-After-Free Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 05/03/2026. Patch affected systems as an emergency.

In short

CVE-2023-43000 is a HIGH (CVSS 8.8) vulnerability affecting safari (apple).
Exploited in the wild: CISA added it to the KEV catalog on 05/03/2026.
Chance of exploitation in the next 30 days (EPSS): 4.0%, higher than 90.6% of all vulnerabilities.
Fix: update to 16.6 or later.

Package	Affected versions	Patched versions
safari apple	`< 16.6`	`16.6`

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.

References

support.apple.com/en-us/120324 · Release Notes
support.apple.com/en-us/120331 · Release Notes
support.apple.com/en-us/120338 · Release Notes
support.apple.com/en-us/126632 · Release Notes
cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit · Exploit
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2023-43000

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Package

Affected versions

Patched versions

safari

apple

< 16.6

16.6

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