Description
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3, macOS Tahoe 26.2. An app may be able to access user-sensitive data.
Published: 2025-12-12
Score: 3.3 Low
EPSS: < 1% Very Low
KEV: No
Impact: Information Disclosure via App Access to User Data
Action: Patch Now
AI Analysis

Impact

A downgrade vulnerability affecting Intel-based Mac computers was addressed with additional code-signing restrictions. The flaw allows an application to gain unauthorized access to user-sensitive data. The weakness is categorized as CWE-347.

Affected Systems

Apple macOS running on Intel processors. The vulnerability is fixed in macOS Sequoia 15.7.3 and macOS Tahoe 26.2, but earlier releases of Sequoia and Tahoe remain affected.

Risk and Exploitability

The CVSS score of 3.3 indicates low severity, and the EPSS score of less than 1% suggests a very low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. Based on the description, the attack vector probably requires the ability to install or run unauthorized, incorrectly signed applications, which typically demands local user privileges or a compromised system. No public exploit is known and the risk to unpatched systems is considered modest but non‑negligible.

Generated by OpenCVE AI on April 27, 2026 at 22:31 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Install macOS Sequoia 15.7.3 or macOS Tahoe 26.2 to apply the code-signing restrictions that fix the downgrade flaw.
  • Enable automatic updates on all Intel-based Mac devices to ensure that the latest security patches are applied promptly.
  • Verify that any third‑party applications you install are properly code-signed by trusted developers to prevent downgrade attacks.

Generated by OpenCVE AI on April 27, 2026 at 22:31 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 27 Apr 2026 23:00:00 +0000

Type Values Removed Values Added
Title Downgrade Vulnerability Allowing Unauthorized Access to User Data on Intel-based macOS

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

Type Values Removed Values Added
Description A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Tahoe 26.2, macOS Sequoia 15.7.3. An app may be able to access user-sensitive data. A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3, macOS Tahoe 26.2. An app may be able to access user-sensitive data.

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

Type Values Removed Values Added
Description A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3. An app may be able to access user-sensitive data. A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Tahoe 26.2, macOS Sequoia 15.7.3. An app may be able to access user-sensitive data.
References

Tue, 16 Dec 2025 23:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Mon, 15 Dec 2025 20:45:00 +0000

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

Mon, 15 Dec 2025 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-347
Metrics 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'}

Sun, 14 Dec 2025 21:30:00 +0000

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

Fri, 12 Dec 2025 21:15:00 +0000

Type Values Removed Values Added
Description A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3. An app may be able to access user-sensitive data.
References

Subscriptions

Apple Macos Macos Sequoia
cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-04-02T18:26:43.102Z

Reserved: 2025-04-16T15:27:21.197Z

Link: CVE-2025-43522

cve-icon Vulnrichment

Updated: 2025-12-15T19:26:06.617Z

cve-icon NVD

Status : Modified

Published: 2025-12-12T21:15:57.020

Modified: 2026-04-02T19:20:59.410

Link: CVE-2025-43522

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-27T22:45:15Z

Weaknesses