What is the CVSS score of EUVD-2026-49542?

EUVD-2026-49542 has a CVSS 3.1 base score of 4.6 (Medium). CVSS vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.2%.

Is there a patch available for EUVD-2026-49542?

Yes, a patch is available for EUVD-2026-49542. Update the affected software to the latest version immediately.

macOS EUVD-2026-49542

| CVE-2026-43766 MEDIUM

Improper Authentication (CWE-287)

2026-07-27 apple

GHSA-4jxm-4x4x-3vxx

Authentication Bypass Apple

4.6

CVSS 3.1 · Vendor: apple

Severity by source

Vendor (apple) PRIMARY

4.6 MEDIUM

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

vuln.today AI

4.6 MEDIUM

Physical vector, no privileges or interaction needed, only confidentiality impact from lock screen bypass.

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

4.0 AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Jul 28, 2026 - 16:37 vuln.today

CVSS changed

Jul 28, 2026 - 16:22 NVD

4.6 (MEDIUM)

Patch available

Jul 27, 2026 - 21:17 EUVD

CVE Published

Jul 27, 2026 - 20:13 cve.org

MEDIUM 4.6

CVE Published

Jul 27, 2026 - 20:13 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

An authorization issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An attacker with physical access to a locked device may be able to view sensitive user information.

AnalysisAI

Information disclosure in macOS allows an attacker with physical access to a locked device to view sensitive user information. Affected versions include macOS Sonoma below 14.8.8, macOS Sequoia below 15.7.8, and macOS Tahoe below 26.6. No public exploit or active exploitation has been identified, and EPSS probability is very low at 0.16%, reflecting the physical access requirement.

Technical ContextAI

The vulnerability is an authorization issue caused by improper state management in macOS handling of the lock screen, classified as CWE-287 Improper Authentication. When a device is locked, the authentication state is not properly enforced, allowing an attacker with physical access to bypass the lock and view user data. CPE data confirms the affected product is apple:macos:*:*:*:*:*:*:*, covering versions prior to the fixed releases across Sonoma, Sequoia, and Tahoe major versions.

RemediationAI

Apply the vendor patch by upgrading to macOS Sonoma 14.8.8, macOS Sequoia 15.7.8, or macOS Tahoe 26.6. For devices that cannot be immediately updated, enforce physical security controls such as restricting physical access to Macs, using locking cables, and ensuring unattended devices are not left in accessible areas; these mitigations reduce but do not eliminate the risk because the attack requires direct physical interaction.