CVE-2023-43000: Apple Multiple products Use-After-Free Vulnerability (Pentest Lab Guide)

CVE-2023-43000: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-23T14:00:38.539Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

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.

Context preserved from previous revision: 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. Notes: Reverse-engineering reconstruction of the Coruna iOS exploit kit (iOS 16/17 chains)

Technical Details

CVE: CVE-2023-43000
KEV date added: 2026-03-05
KEV due date: 2026-03-26
NVD published: 2025-11-05
NVD modified: 2026-03-12
MITRE modified: 2026-03-12
CVSS base score: 8.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS exploitability score: 2.8
CVSS impact score: 5.9
Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Versions and Products Impacted

apple / safari (versions: < 16.6)
apple / ipados (versions: < 15.8.7)
apple / ipados (versions: >= 16.0, < 16.6)
apple / iphone os (versions: < 15.8.7)
apple / iphone os (versions: >= 16.0, < 16.6)
apple / macos (versions: < 13.5)
Apple / macOS (versions: unspecified)
Apple / iOS and iPadOS (versions: unspecified)
Apple / Safari (versions: unspecified)

Weakness Classification

CWE-416
Processing maliciously crafted web content may lead to memory corruption

Repositories for Lab Validation (Public Examples)

zeroxjf/iOS-Coruna-Reconstruction | stars: 35 | updated: 2026-03-23 | https://github.com/zeroxjf/iOS-Coruna-Reconstruction
Notes: Reverse-engineering reconstruction of the Coruna iOS exploit kit (iOS 16/17 chains)
0xcrypto/apple-cves | stars: 0 | updated: 2026-03-22 | https://github.com/0xcrypto/apple-cves

People and Organizations Mentioned

apple
Multiple Products
zeroxjf
0xcrypto

Practical Defensive Validation (Authorized Only)

Use only isolated environments and systems you own or are explicitly authorized to test.
Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
Inventory apple / safari (versions: < 16.6) assets and confirm exact vulnerable versions with automated checks.
Patch in staged environments and validate closure with scanners + service health checks.
Map detections to MITRE ATT&CK tactics relevant to your environment and tune alert quality.

References

NVD record: https://nvd.nist.gov/vuln/detail/CVE-2023-43000
MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43000
CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
KEV 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
https://support.apple.com/en-us/120324
https://support.apple.com/en-us/120331
https://support.apple.com/en-us/120338
https://support.apple.com/en-us/126632
https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000
Repository example: https://github.com/zeroxjf/iOS-Coruna-Reconstruction
Repository example: https://github.com/0xcrypto/apple-cves

This content is for defensive security training and authorized validation only.