Description
An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
Published: 2026-07-27
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

An integer overflow was identified where an application could cause unexpected system termination. This issue was addressed with improved input validation and is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. The flaw results from insufficient input validation and is classified as CWE-190.

Affected Systems

Apple macOS platforms prior to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6 are vulnerable. The fix is included in those releases and later.

Risk and Exploitability

The CVSS score of 9.8 reflects a critical severity, while the EPSS score is < 1% indicating a low probability of exploitation. The vulnerability can be leveraged by a local or privileged application to crash the entire system, causing a denial‑of‑service event. No public exploits have been reported, and it is not listed in CISA KEV.

Generated by OpenCVE AI on August 3, 2026 at 16:22 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the macOS installation to at least macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 to apply the integer‑overflow fix.
  • Enable automatic system updates or regularly install Apple security patches to ensure the latest protection is in place.
  • If an upgrade is not immediately possible, restrict the installation of untrusted applications and limit user privileges to mitigate the risk of exploit attempts.

Generated by OpenCVE AI on August 3, 2026 at 16:22 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 03 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
Title Integer Overflow in macOS Leading to Unexpected System Termination

Tue, 28 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Title Integer Overflow in macOS Leading to Unexpected System Termination
Weaknesses CWE-190
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 28 Jul 2026 03:15:00 +0000

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

Mon, 27 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Description An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
References

Subscriptions

Apple Macos
cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-07-28T14:39:03.078Z

Reserved: 2026-05-01T22:46:27.817Z

Link: CVE-2026-43764

cve-icon Vulnrichment

Updated: 2026-07-28T14:38:52.695Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-27T21:17:00.770

Modified: 2026-07-28T19:55:27.950

Link: CVE-2026-43764

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-03T16:30:04Z

Weaknesses
  • CWE-190

    Integer Overflow or Wraparound