CVE-2021-30883

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

• CWE-787
• CWE-787

• https://support.apple.com/en-us/HT212846Vendor Advisory
• https://support.apple.com/en-us/HT212868Vendor Advisory
• https://support.apple.com/en-us/HT212869Vendor Advisory
• https://support.apple.com/en-us/HT212872Vendor Advisory
• https://support.apple.com/en-us/HT212874Vendor Advisory
• https://support.apple.com/en-us/HT212876Vendor Advisory
• https://support.apple.com/en-us/HT212846Vendor Advisory
• https://support.apple.com/en-us/HT212868Vendor Advisory
• https://support.apple.com/en-us/HT212869Vendor Advisory
• https://support.apple.com/en-us/HT212872Vendor Advisory
• https://support.apple.com/en-us/HT212874Vendor Advisory
• https://support.apple.com/en-us/HT212876Vendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30883US Government Resource

Published

Aug 24, 2021

Last Modified

Jun 17, 2026

Status

Analyzed

• 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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