CVE-2023-43000
Apple macOS, Apple iOS and iPadOS, Apple Safari
Published 5 Nov 2025 · updated 21 Sept 2026 · Analyzed
8.8 High · CVSS 3.1, NVD
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 5 Mar 2026, with a remediation deadline of 26 Mar 2026 for US federal agencies.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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, Vendor Advisory
- support.apple.com/en-us/120331 · Release Notes, Vendor Advisory
- support.apple.com/en-us/120338 · Release Notes, Vendor Advisory
- support.apple.com/en-us/126632 · Release Notes, Vendor Advisory
- cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit · Exploit, Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000 · US Government Resource