CVE-2023-43000A use-after-free issue was addressed with improved memory management.
Updated under an hour ago ()
Does this affect you?
It affects Apple macOS and 4 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 5, 2026; federal agencies had to remediate by Mar 26, 2026. Treat that date as your deadline.
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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
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Added to CISA KEV Mar 5, 2026; federal remediation due Mar 26, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 4.04% (percentile 90)
- Assigned by
- apple
- NVD analysis
- Analyzed
- Record last updated
- Sep 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apple macOS apple:macos (from the name) | from unspecified before 13.5 | CNA record |
Apple iOS and iPadOS apple:ios_and_ipados (from the name) | from unspecified before 16.6 | CNA record |
Apple Safari apple:safari (from the name) | from unspecified before 16.6 | CNA record |
apple safari apple:safari | before 16.6 | NVD |
apple ipados apple:ipados | before 15.8.7; from 16.0 before 16.6 | NVD |
apple iphone_os apple:iphone_os | before 15.8.7; from 16.0 before 16.6 | NVD |
apple macos apple:macos | before 13.5 | NVD |
References
- 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/120324release-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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.