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Apple EUVDEUVD-2026-78112

| CVE-2026-84543 HIGH
Out-of-bounds Read (CWE-125)
2026-09-14 apple GHSA-2j2x-q52r-gmg8
7.5
CVSS 3.1 · Vendor: apple
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Severity by source

Vendor (apple) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Primary rating from Vendor (apple) · only source for this CVE.

CVSS VectorVendor: apple

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

5
Analysis Generated
Sep 15, 2026 - 19:22 vuln.today
CVSS changed
Sep 15, 2026 - 19:22 NVD
7.5 (HIGH)
Patch available
Sep 14, 2026 - 22:19 EUVD
CVE Published
Sep 14, 2026 - 20:51 cve.org
HIGH 7.5
CVE Published
Sep 14, 2026 - 20:51 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may cause unexpected system termination or corrupt kernel memory.

AnalysisAI

Out-of-bounds memory access in the macOS SMB client kernel component allows a malicious or compromised SMB server to corrupt kernel memory when a victim connects to it, resulting in unexpected system termination or potentially kernel-level code execution. All macOS releases prior to Sequoia 15.8, Tahoe 26.7, and Golden Gate 27 are affected. …

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EUVD-2026-78112 vulnerability details – vuln.today

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