The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Connecting to a malicious SMB server may lead to unexpected system termination.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 05 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Title macOS SMB Server Crash Leading to Denial of Service

Tue, 04 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Title macOS SMB Server Crash Leading to Denial of Service
Weaknesses CWE-122

Sun, 02 Aug 2026 10:15:00 +0000

Type Values Removed Values Added
Title Malicious SMB Server Can Crash macOS via Improper Memory Handling

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

Type Values Removed Values Added
Title Malicious SMB Server Can Crash macOS via Improper Memory Handling
Weaknesses CWE-119
CWE-122
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 01:45:00 +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 The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Connecting to a malicious SMB server may lead to unexpected system termination.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-07-28T15:22:19.388Z

Reserved: 2026-04-07T19:58:20.173Z

Link: CVE-2026-39873

cve-icon Vulnrichment

Updated: 2026-07-28T15:21:28.438Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-27T21:16:51.340

Modified: 2026-07-28T19:53:04.620

Link: CVE-2026-39873

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T00:00:03Z

Weaknesses