What is the CVSS score of EUVD-2026-15121?

EUVD-2026-15121 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of macOS are affected by EUVD-2026-15121?

Organizations using An authorization should be aware of moderate risk from CVE-2026-28845 rated CVSS 5.5. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate EUVD-2026-15121?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

macOS EUVD-2026-15121

| CVE-2026-28845 MEDIUM

Improper Authorization (CWE-285)

2026-03-25 apple

GHSA-gffw-527m-r476

Apple Authentication Bypass macOS

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

26.4

EUVD ID Assigned

Mar 25, 2026 - 01:00 euvd

EUVD-2026-15121

Analysis Generated

Mar 25, 2026 - 01:00 vuln.today

CVE Published

Mar 25, 2026 - 00:32 nvd

MEDIUM 5.5

DescriptionCVE.org

An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.4. An app may be able to access protected user data.

AnalysisAI

An authorization flaw in macOS Tahoe allows applications to bypass access controls and retrieve protected user data due to improper state management during permission checks. Apple has addressed this vulnerability in macOS Tahoe 26.4, and all versions prior to 26.4 remain vulnerable. Affected users should prioritize upgrading to the patched version to prevent unauthorized data access by malicious or compromised applications.

Technical ContextAI

This vulnerability is rooted in inadequate state management within macOS authorization mechanisms, likely affecting the framework responsible for enforcing application permissions to sensitive user data (contacts, photos, location, etc.). The authorization system fails to properly maintain and validate permission state during application execution, creating a window where an app can access protected resources without valid authorization. While specific CWE classification is not provided, this aligns with CWE-269 (Improper Control of Resource Identifiers) and CWE-285 (Improper Authorization) patterns. The affected product is Apple macOS across all versions prior to Tahoe 26.4, as indicated by the CPE string cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:* which represents all versions of macOS.

RemediationAI

Upgrade immediately to macOS Tahoe 26.4 or later to receive the patched authorization state management code. Visit https://support.apple.com/en-us/126794 for detailed patching instructions and to verify your current macOS version. Until systems can be patched, limit application installations to trusted sources from the App Store, disable sideloaded or unsigned applications where possible, and review application permissions in System Settings to restrict access to sensitive data categories. Additionally, keep all macOS security updates enabled through automatic update settings and monitor Apple's security announcements for any subsequent related fixes.