CVE-2026-84520: A local attacker may be able to cause unexpected system termination or corrupt kernel memory in Apple macOS
CVE-2026-84520 is a buffer overflow vulnerability in Apple macOS that could allow a local attacker to cause unexpected system termination or corrupt kernel memory. The issue has been fixed in macOS Golden Gate 27. Versions prior to 27 are affected.
AI Analysis
Technical Summary
This vulnerability involves a buffer overflow due to insufficient size validation in macOS. A local attacker exploiting this flaw may cause the system to terminate unexpectedly or corrupt kernel memory, potentially leading to system instability or crashes. The vulnerability is addressed by improved size validation and fixed in macOS Golden Gate 27.
Potential Impact
A local attacker could exploit this vulnerability to cause unexpected system termination or corrupt kernel memory, which may result in system crashes or instability. There is no indication of remote exploitation or privilege escalation beyond local access.
Mitigation Recommendations
Upgrade to macOS Golden Gate 27 or later, where this vulnerability has been fixed with improved size validation. Applying this official fix will mitigate the risk.
CVE-2026-84520: A local attacker may be able to cause unexpected system termination or corrupt kernel memory in Apple macOS
Description
CVE-2026-84520 is a buffer overflow vulnerability in Apple macOS that could allow a local attacker to cause unexpected system termination or corrupt kernel memory. The issue has been fixed in macOS Golden Gate 27. Versions prior to 27 are affected.
Affected software
Apple
macOS
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a buffer overflow due to insufficient size validation in macOS. A local attacker exploiting this flaw may cause the system to terminate unexpectedly or corrupt kernel memory, potentially leading to system instability or crashes. The vulnerability is addressed by improved size validation and fixed in macOS Golden Gate 27.
Potential Impact
A local attacker could exploit this vulnerability to cause unexpected system termination or corrupt kernel memory, which may result in system crashes or instability. There is no indication of remote exploitation or privilege escalation beyond local access.
Mitigation Recommendations
Upgrade to macOS Golden Gate 27 or later, where this vulnerability has been fixed with improved size validation. Applying this official fix will mitigate the risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-01T21:13:17.749Z
- State
- PUBLISHED
Threat ID: 6aa8610455bf5e2cf59d2844
Added to database: 09/14/2026, 21:03:00 UTC
Last enriched: 09/14/2026, 22:30:41 UTC
Last updated: 09/15/2026, 03:01:22 UTC
Views: 2
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