CVE-2020-9934

Apple iOS, Apple macOS

Published 16 Oct 2020 · updated 17 Jun 2026 · Analyzed

5.5 Medium · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 8 Sept 2022, with a remediation deadline of 29 Sept 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

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.

References

support.apple.com/HT211288 · Release Notes, Vendor Advisory
support.apple.com/HT211289 · Release Notes, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9934 · US Government Resource