# CVE-2020-27930: Apple Multiple Products Memory Corruption Vulnerability

Source: https://junglewise.ai/threats/cve-2020-27930-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-2020-27930 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

A memory corruption vulnerability in the FontParser component of multiple Apple operating systems allows for arbitrary code execution. The issue stems from insufficient input validation when processing maliciously crafted fonts.

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

## Quick answers

**Is CVE-2020-27930 exploited in the wild?** Yes. CVE-2020-27930 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2020-27930?** Critical severity, with a CVSS score of 7.8, published 3 November 2021.

**Which products and versions are affected?** Apple iOS < 12.4.9, 14.0 to < 14.2; Apple iPadOS < 14.2; Apple macOS < 11.0.1, 10.15.7 Supplemental Update, 10.15.7 Update; Apple watchOS < 5.3.9, 6.0 to < 6.2.9, 7.0 to < 7.1.

**Is there a fix for CVE-2020-27930?** A patch was published on 2020-11-05: Addressed in various OS updates including iOS 14.2 and macOS Big Sur 11.0.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2020-27930 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2020-27930?** 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 < 12.4.9, 14.0 to < 14.2
- Apple iPadOS < 14.2
- Apple macOS < 11.0.1, 10.15.7 Supplemental Update, 10.15.7 Update
- Apple watchOS < 5.3.9, 6.0 to < 6.2.9, 7.0 to < 7.1

## Timeline

- 2020-12-09: disclosed: Initial NVD analysis and disclosure
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2020-11-05: patched: Addressed in various OS updates including iOS 14.2 and macOS Big Sur 11.0.1
- 2021-11-03: exploited: Reported as exploited in the wild per CISA KEV catalog entry

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