---
id: "CVE-2021-30883"
kind: "vulnerability"
aliases: ["CVE-2021-30883"]
title: "Apple Multiple Products: Apple Multiple Products Memory Corruption Vulnerability"
severity: "critical"
cvss: 9.3
epss: 0.14721
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Apple Multiple Products", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["apple", "exploited", "infrastructure", "ios", "macos", "tvos", "watchos"]
not_affected_if: ["unpatched-devices-only"]
published_at: "2021-08-24T19:15:16+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-30883", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-30883", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-30883", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Apple Multiple Products: Apple Multiple Products Memory Corruption Vulnerability

Apple iOS, macOS, watchOS and tvOS contain a memory corruption flaw in the kernel-level image or media handling path (CVE-2021-30883, known as the IOMobileFrameBuffer-style issue; sources do not name the component). An attacker can run code on an affected Apple device.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Apple Multiple Products affected ? fixed ?

## Fix

Update iOS, macOS, watchOS and tvOS to a release that includes Apple's fix; sources do not name the fixed version.
CISA directs federal agencies to apply vendor updates.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-30883
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2021-30883
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2021-30883

## From the sources

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..

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_