Description
An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 26.1 and iPadOS 26.1, macOS Tahoe 26, tvOS 26.1, watchOS 26.1. An app may be able to access sensitive user data.
Published: 2025-09-15
Score: 3.3 Low
EPSS: < 1% Very Low
KEV: No
Impact: Sensitive Data Exposure
Action: Apply Patch
AI Analysis

Impact

An improper access control flaw in the handling of environment variables allows an application to read data that should be restricted. Because the flaw exposes sensitive system information, it can lead to information disclosure. The weakness is captured by CWE-284, Improper Access Control.

Affected Systems

The flaw affects Apple operating systems. Devices running iOS or iPadOS earlier than version 26.1, macOS Tahoe earlier than 26, tvOS earlier than 26.1, and watchOS earlier than 26.1 are vulnerable. The fix has been delivered in those OS releases.

Risk and Exploitability

The CVSS score is 3.3, reflecting a low severity due to the limited scope of the vulnerability. The EPSS score is below 1%, indicating that exploitation is unlikely. The vulnerability is not listed in the CISA KEV catalog. Attackers would need to install a malicious or compromised application on the device to read environment variables, so the attack vector is local and limited to the affected OS environments.

Generated by OpenCVE AI on April 27, 2026 at 23:50 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade all Apple devices to iOS 26.1 or later, iPadOS 26.1 or later, macOS Tahoe 26 or later, tvOS 26.1 or later, and watchOS 26.1 or later to receive the fix.
  • If an immediate upgrade is not possible, review installed applications and uninstall any that appear suspicious or that may attempt to read environment variables, thereby reducing the attack surface.
  • Monitor Apple’s security advisories and verify that the OS version reported in Settings reflects the latest release.

Generated by OpenCVE AI on April 27, 2026 at 23:50 UTC.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-29276 An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in macOS Tahoe 26. An app may be able to access sensitive user data.
History

Tue, 28 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Title Improper Access Control Enables Sensitive Data Exposure via Environment Variables on Apple OS

Thu, 02 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
Description An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in tvOS 26.1, macOS Tahoe 26, watchOS 26.1, iOS 26.1 and iPadOS 26.1. An app may be able to access sensitive user data. An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 26.1 and iPadOS 26.1, macOS Tahoe 26, tvOS 26.1, watchOS 26.1. An app may be able to access sensitive user data.

Wed, 17 Dec 2025 21:00:00 +0000

Type Values Removed Values Added
Description An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in watchOS 26.1, iOS 26.1 and iPadOS 26.1, tvOS 26.1. An app may be able to access sensitive user data. An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in tvOS 26.1, macOS Tahoe 26, watchOS 26.1, iOS 26.1 and iPadOS 26.1. An app may be able to access sensitive user data.
References

Tue, 04 Nov 2025 02:30:00 +0000

Type Values Removed Values Added
References

Tue, 04 Nov 2025 01:45:00 +0000

Type Values Removed Values Added
Description An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in macOS Tahoe 26. An app may be able to access sensitive user data. An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in watchOS 26.1, iOS 26.1 and iPadOS 26.1, tvOS 26.1. An app may be able to access sensitive user data.
References

Mon, 03 Nov 2025 19:30:00 +0000

Type Values Removed Values Added
References

Wed, 17 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

 cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Wed, 17 Sep 2025 13:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Wed, 17 Sep 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos

Tue, 16 Sep 2025 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 15 Sep 2025 22:45:00 +0000

Type Values Removed Values Added
Description An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in macOS Tahoe 26. An app may be able to access sensitive user data.
References

Subscriptions

Apple Macos
cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-04-02T18:25:56.123Z

Reserved: 2025-04-16T15:24:37.102Z

Link: CVE-2025-43294

cve-icon Vulnrichment

Updated: 2025-11-03T18:10:14.771Z

cve-icon NVD

Status : Modified

Published: 2025-09-15T23:15:32.580

Modified: 2026-04-02T19:20:21.280

Link: CVE-2025-43294

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T00:00:18Z

Weaknesses