CVE-2026-84549: Connecting to a malicious NFS server may cause unexpected system termination or corrupt kernel memory in Apple macOS
A vulnerability in Apple macOS allows connecting to a malicious NFS server to cause unexpected system termination or corrupt kernel memory. The issue is due to an out-of-bounds read that has been fixed with improved bounds checking. The fix is included in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI Analysis
Technical Summary
CVE-2026-84549 is an out-of-bounds read vulnerability in Apple macOS NFS client code. When a macOS system connects to a malicious NFS server, it may trigger unexpected system termination or kernel memory corruption. Apple addressed this issue by improving bounds checking. The vulnerability affects versions prior to macOS Golden Gate 27, Sequoia 15.8, and Tahoe 26.7, which include the fix.
Potential Impact
Exploitation of this vulnerability can cause a macOS system to crash unexpectedly or corrupt kernel memory, potentially leading to denial of service or system instability. There is no indication of active exploitation in the wild.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7 or later. These versions contain improved bounds checking that resolves the vulnerability. No other mitigations are specified.
CVE-2026-84549: Connecting to a malicious NFS server may cause unexpected system termination or corrupt kernel memory in Apple macOS
Description
A vulnerability in Apple macOS allows connecting to a malicious NFS server to cause unexpected system termination or corrupt kernel memory. The issue is due to an out-of-bounds read that has been fixed with improved bounds checking. The fix is included in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Affected software
Apple
macOS
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-84549 is an out-of-bounds read vulnerability in Apple macOS NFS client code. When a macOS system connects to a malicious NFS server, it may trigger unexpected system termination or kernel memory corruption. Apple addressed this issue by improving bounds checking. The vulnerability affects versions prior to macOS Golden Gate 27, Sequoia 15.8, and Tahoe 26.7, which include the fix.
Potential Impact
Exploitation of this vulnerability can cause a macOS system to crash unexpectedly or corrupt kernel memory, potentially leading to denial of service or system instability. There is no indication of active exploitation in the wild.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7 or later. These versions contain improved bounds checking that resolves the vulnerability. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-01T21:13:17.751Z
- State
- PUBLISHED
Threat ID: 6aa8610855bf5e2cf59d2993
Added to database: 09/14/2026, 21:03:04 UTC
Last enriched: 09/14/2026, 22:32:24 UTC
Last updated: 09/15/2026, 03:01:23 UTC
Views: 3
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