CVE-2020-9934

MEDIUM5.5

CISA KEV

Published 2020-10-16 · Updated 2026-06-17 · Source product-security@apple.com

Summary

CVE-2020-9934 is a medium-severity (CVSS 5.5) vulnerability in Apple iOS, iPadOS, and macOS. CISA added it to the Known Exploited Vulnerabilities catalog on September 8, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by September 29, 2022. CISA does not currently list it as used in ransomware campaigns. Apple has 96 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 96 known-exploited Apple vulnerabilities →

Description

An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6. A local user may be able to view sensitive user information.

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA Known-Exploited Vulnerability

Product: Apple — iOS, iPadOS, and macOS

Name: Apple iOS, iPadOS, and macOS Input Validation Vulnerability

Date added: 2022-09-08 · Due: 2022-09-29

Required action: Apply updates per vendor instructions.

References

View on NVD

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