CVE-2023-43000

moderate-risk

Published 2025-11-05

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.

Do I need to act?

0.02% chance of exploitation

EPSS score — low exploit probability

CISA KEV: actively exploited in the wild

On the Known Exploited Vulnerabilities catalog — federal agencies must patch

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.8/10 High

NETWORK / LOW complexity

Affected Products (4)

Safari

Ipados

Iphone Os

Macos

Affected Vendors

Apple

References (6)

Release Notes https://support.apple.com/en-us/120324

Release Notes https://support.apple.com/en-us/120331

Release Notes https://support.apple.com/en-us/120338

Release Notes https://support.apple.com/en-us/126632

Exploit https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exp...

US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-...

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moderate-risk

Severity 30/34 · Critical

Exploitability 7/34 · Low

Exposure 10/34 · Low