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Medium · 5.5 Known exploited Public exploit CVE-2020-9934 EUVD-2020-30713GHSA-x5m3-93g8-f3rh

An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 13…

Published Oct 16, 2020 · Updated Oct 21, 2025 · Assigned by apple

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.

Affected products

VendorProductAffectedFixed
Apple iOS unspecified – < iOS 13.6 and iPadOS 13.6 iOS 13.6 and iPadOS 13.6
Apple macOS unspecified – < macOS Catalina 10.15.6 macOS Catalina 10.15.6

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References