CVE-2023-43000: Apple Multiple products Use-After-Free Vulnerability

CISA Known Exploited Vulnerabilities

Name

Apple Multiple products Use-After-Free Vulnerability

Vendor

Apple

Product

Multiple Products

Added to the catalog

2026-03-05

Due date for US federal agencies

2026-03-26

Weaknesses

CWE-416

Catalog version

2026.10.30

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.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• 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

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2025-11-05T19:15:47.937

Last modified

2026-10-28T19:10:00.193

Weaknesses

CWE-416

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

• https://support.apple.com/en-us/120324 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/120331 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/120338 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/126632 (Release Notes, Vendor Advisory)
• https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit (Exploit, Third Party Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:22.836Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-43000

CVE record

Assigner

apple

State

PUBLISHED

Published

2025-11-05T18:33:23.777Z

Updated

2026-09-21T19:03:00.605Z

Problem types

Processing maliciously crafted web content may lead to memory corruption

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

• https://support.apple.com/en-us/120331
• https://support.apple.com/en-us/120338
• https://support.apple.com/en-us/120324
• https://support.apple.com/en-us/126632

Read on 2026-11-03T02:04:41.617Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2023/43xxx/CVE-2023-43000.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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