# CVE-2020-9934: Apple iOS, iPadOS, and macOS Input Validation Vulnerability

Source: https://junglewise.ai/threats/cve-2020-9934-apple-ios-ipados-and-macos-input-validation-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-09-08. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2020-9934 · Severity: critical · CVSS 5.5 · Exploited in the wild · Published 2022-09-08

An input validation issue in the handling of environment variables in Apple iOS, iPadOS, and macOS allows a local attacker to view sensitive user information. The vulnerability was addressed by improving validation logic in system updates.

Technologies: [Apple iPadOS](https://junglewise.ai/threats/technologies/ipados), [Apple macOS](https://junglewise.ai/threats/technologies/macos), [Apple watchOS](https://junglewise.ai/threats/technologies/watchos), [Cisco IOS](https://junglewise.ai/threats/technologies/ios). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple), [Cisco](https://junglewise.ai/threats/vendors/cisco).

## Quick answers

**Is CVE-2020-9934 exploited in the wild?** Yes. CVE-2020-9934 is known to be exploited in the wild, first recorded on 8 September 2022. Treat it as urgent.

**How severe is CVE-2020-9934?** Critical severity, with a CVSS score of 5.5, published 8 September 2022.

**Which products and versions are affected?** Apple iOS < 13.6; Apple iPadOS < 13.6; Apple macOS Catalina < 10.15.6.

**Is there a fix for CVE-2020-9934?** A patch was published on 2020-07-15: Fixed in iOS 13.6, iPadOS 13.6, and macOS Catalina 10.15.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2020-9934 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2020-9934?** Check whether you run Apple iPadOS, Apple macOS, Apple watchOS or one of the others listed. 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 < 13.6
- Apple iPadOS < 13.6
- Apple macOS Catalina < 10.15.6

## Timeline

- 2020-10-16: disclosed: NVD Published Date
- 2022-09-08: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2020-07-15: patched: Fixed in iOS 13.6, iPadOS 13.6, and macOS Catalina 10.15.6

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