Vulnerability · CVE-2023-43000
Apple Multiple products Use-After-Free Vulnerability
Published Nov 5, 2025 · catalog updated Sep 21, 2026 · Apple Multiple Products
Patch now
CVE-2023-43000 is in the CISA known-exploited catalog, due Mar 26, 2026. Confirm Apple Multiple Products against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- Severity
- High8.8
- Known exploitation
- CISA KEV and VulnCheck KEV
- EPSS
- 4.04%
- Remediation
- Remediation guidance
- Affected products
- cpe apple/ipados · cpe apple/iphone os · cpe apple/macos · cpe apple/safari · vendor Apple Multiple Products
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe apple/ipadosversion unspecified
- cpe apple/iphone osversion unspecified
- cpe apple/macosversion unspecified
- cpe apple/safariversion unspecified
- vendor Apple Multiple Productsversion unspecified
How to fix CVE-2023-43000
Recommended remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA due date Mar 26, 2026.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2023-43000 is in the CISA known-exploited catalog, due Mar 26, 2026. Confirm Apple Multiple Products against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Which versions are affected?
Affected version ranges are not on this record. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
What should an analyst verify?
CWE-416: Use After Free. EPSS 4.04%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Nov 5, 2025 · Catalog
Detected
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.
Mar 5, 2026 · CISA KEV
Known exploited
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Mar 26, 2026 · CISA KEV
Remediation due
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Sep 21, 2026 · Catalog
Updated
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.
Sources
- CISA KEVConfirmed exploitationCVE-2023-43000
Apple macOS, iOS, iPadOS, and Safari 16.6 contain a use-after-free vulnerability due to the processing of maliciously crafted web content that may lead to memory corruption.
cisa.gov - CVE.orgVulnerability recordCVE-2023-43000
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2023-43000
30-day exploitation probability 4.0%
first.org - NIST NVDVulnerability recordCVE-2023-43000
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.
nvd.nist.gov - VulnCheck KEVConfirmed exploitationCVE-2023-43000
Apple macOS, iOS, iPadOS, and Safari 16.6 contain a use-after-free vulnerability due to the processing of maliciously crafted web content that may lead to memory corruption.
vulncheck.com
References
Freshness
Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.