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Vulnerability Intelligence Report
Apple iOS, iPadOS, and macOS Input Validation Vulnerability

CVE-2020-9934

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.

CISA KEV SSVC: Active Exploitation
CVSS Base Score
5.5
MEDIUM
Exploitability:1.9
Impact Score:3.6
EPSS Probability:3.21%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
Authentication
Weaponization
SSVC Action

Affected Products & Versions

Vendor Product Affected Versions
Apple iOS unspecified < iOS 13.6 and iPadOS 13.6 (affected)
Apple macOS unspecified < macOS Catalina 10.15.6 (affected)

References & Technical Advisories

No reference links found.

Threat Intelligence Signals

CISA KEV
ACTIVE IN CATALOG
EPSS Score
3.208%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityApple Inc. · Vendor · USA
Reserved2020-03-02T00:00:00
Published2020-10-16T16:51:05
Last Updated2025-10-21T23:35:35

LINK COPIED TO CLIPBOARD