CVE-2023-43000
Apple Multiple products Use-After-Free Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 26 March 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 4.04% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 5 March 2026 · due 26 March 2026
- Weakness
- CWE-416
- Affected
- apple/safari · apple/ipados · apple/iphone os · apple/macos
- Source
- product-security@apple.com
EPSS 4.0% since 30 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://support.apple.com/en-us/120324 ; https://support.apple.com/en-us/120331 ; https://support.apple.com/en-us/120338 ; https://nvd.nist.gov/vuln/detail/CVE-2023-43000
References
- https://support.apple.com/en-us/120324Release Notes, Vendor Advisory
- https://support.apple.com/en-us/120331Release Notes, Vendor Advisory
- https://support.apple.com/en-us/120338Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126632Release Notes, Vendor Advisory
- https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kitExploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.