# CVE-2021-30807: Apple Multiple Products Memory Corruption Vulnerability

Source: https://junglewise.ai/threats/cve-2021-30807-apple-multiple-products-memory-corruption-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2021-30807 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

A memory corruption vulnerability in the IOMobileFrameBuffer component of multiple Apple operating systems allows an application to execute arbitrary code with kernel privileges. The issue stems from improper memory handling and has been reported as being actively exploited in the wild.

Technologies: [Apple Multiple Products](https://junglewise.ai/threats/technologies/multiple-products). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple).

## Quick answers

**Is CVE-2021-30807 exploited in the wild?** Yes. CVE-2021-30807 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2021-30807?** Critical severity, with a CVSS score of 7.8, published 3 November 2021.

**Which products and versions are affected?** Apple iOS < 14.7.1; Apple iPadOS < 14.7.1; Apple macOS Big Sur < 11.5.1; Apple watchOS < 7.6.1.

**Is there a fix for CVE-2021-30807?** A patch was published on 2021-07-26: Fixed in macOS Big Sur 11.5.1, iOS 14.7.1, iPadOS 14.7.1, and watchOS 7.6.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2021-30807 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2021-30807?** Check whether you run Apple Multiple Products. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Apple iOS < 14.7.1
- Apple iPadOS < 14.7.1
- Apple macOS Big Sur < 11.5.1
- Apple watchOS < 7.6.1

## Timeline

- 2021-10-19: disclosed: NVD Published Date
- 2021-11-03: kev added: Date added to CISA Known Exploited Vulnerabilities Catalog
- 2021-07-26: patched: Fixed in macOS Big Sur 11.5.1, iOS 14.7.1, iPadOS 14.7.1, and watchOS 7.6.1
- 2021-10-19: exploited: Apple aware of reports of active exploitation at time of disclosure

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