CVE-2023-40420

The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.6, tvOS 17, iOS 16.7 and iPadOS 16.7, macOS Monterey 12.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. Processing web content may lead to a denial-of-service.

• http://seclists.org/fulldisclosure/2023/Oct/10Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2023/Oct/3
• http://seclists.org/fulldisclosure/2023/Oct/4
• http://seclists.org/fulldisclosure/2023/Oct/5Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2023/Oct/6
• http://seclists.org/fulldisclosure/2023/Oct/8
• http://seclists.org/fulldisclosure/2023/Oct/9
• https://support.apple.com/en-us/HT213927Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213931Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213932Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213936Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213937Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213938Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213940Release Notes, Vendor Advisory
• http://seclists.org/fulldisclosure/2023/Oct/10Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2023/Oct/3
• http://seclists.org/fulldisclosure/2023/Oct/4
• http://seclists.org/fulldisclosure/2023/Oct/5Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2023/Oct/6
• http://seclists.org/fulldisclosure/2023/Oct/8
• http://seclists.org/fulldisclosure/2023/Oct/9
• https://support.apple.com/en-us/HT213927Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213931Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213932Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213936Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213937Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213938Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT213940Release Notes, Vendor Advisory
• https://support.apple.com/kb/HT213931
• https://support.apple.com/kb/HT213932
• https://support.apple.com/kb/HT213936
• https://support.apple.com/kb/HT213937
• https://support.apple.com/kb/HT213938
• https://support.apple.com/kb/HT213940

Published

Sep 27, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

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