CVE-2026-84515: Connecting to a malicious SMB server may lead to kernel memory corruption in Apple macOS
CVE-2026-84515 is a vulnerability in Apple macOS where connecting to a malicious SMB server may cause kernel memory corruption due to an out-of-bounds write. The issue was addressed by improved bounds checking and fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write in the macOS kernel triggered by connecting to a malicious SMB server. The flaw allows kernel memory corruption, which could potentially lead to system instability or privilege escalation. Apple fixed this issue by implementing improved bounds checking in the specified macOS versions: Golden Gate 27, Sequoia 15.8, and Tahoe 26.7.
Potential Impact
Successful exploitation of this vulnerability may result in kernel memory corruption, which can cause system crashes or potentially allow an attacker to execute arbitrary code with kernel privileges. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7. Users and administrators should update to these versions or later to remediate this vulnerability.
CVE-2026-84515: Connecting to a malicious SMB server may lead to kernel memory corruption in Apple macOS
Description
CVE-2026-84515 is a vulnerability in Apple macOS where connecting to a malicious SMB server may cause kernel memory corruption due to an out-of-bounds write. The issue was addressed by improved bounds checking and fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Affected software
Apple
macOS
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write in the macOS kernel triggered by connecting to a malicious SMB server. The flaw allows kernel memory corruption, which could potentially lead to system instability or privilege escalation. Apple fixed this issue by implementing improved bounds checking in the specified macOS versions: Golden Gate 27, Sequoia 15.8, and Tahoe 26.7.
Potential Impact
Successful exploitation of this vulnerability may result in kernel memory corruption, which can cause system crashes or potentially allow an attacker to execute arbitrary code with kernel privileges. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7. Users and administrators should update to these versions or later to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-01T21:13:17.748Z
- State
- PUBLISHED
Threat ID: 6aa8610455bf5e2cf59d283e
Added to database: 09/14/2026, 21:03:00 UTC
Last enriched: 09/14/2026, 22:30:20 UTC
Last updated: 09/15/2026, 05:01:22 UTC
Views: 3
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