CVE-2023-40394

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Published Jan 10, 2024 CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed

Description

The issue was addressed with improved validation of environment variables. This issue is fixed in iOS 16.6 and iPadOS 16.6. An app may be able to access sensitive user data.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Apple

iOS and iPadOS

affected

Version	Status	Constraints
`unspecified`	affected	< 16.6

Configuration 1 [-]

OR	cpe:2.3:o:apple:ipados::::::::
	cpe:2.3:o:apple:iphone_os::::::::

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2023-44965	The issue was addressed with improved validation of environment variables. This issue is fixed in iOS 16.6 and iPadOS 16.6. An app may be able to access sensitive user data.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.204% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://support.apple.com/en-us/HT213841

History

Jun 20, 2025 4:15 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-20
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Apple Ipados Iphone Os

Weaknesses

Sources

CVE record Updated: Jun 20, 2025, 3:39 PM

Status: PUBLISHED
Assigner: apple
Published: Jan 10, 2024, 10:03 PM
Updated: Jun 20, 2025, 3:39 PM
Reserved: Aug 14, 2023, 8:26 PM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 6:31 PM

Updated: Aug 2, 2024, 6:31 PM

NVD Updated: Jun 17, 2026, 6:17 AM

Status: Modified
Published: Jan 10, 2024, 10:15 PM
Modified: Jun 17, 2026, 6:17 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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