CVE-2026-43761: Mounting a malicious disk image may cause unexpected system termination in Apple macOS
CVE-2026-43761 is a vulnerability in Apple macOS where mounting a malicious disk image may cause unexpected system termination due to an out-of-bounds write issue. This issue has been addressed with improved bounds checking and fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write triggered when mounting a malicious disk image on Apple macOS systems. The flaw could cause the system to terminate unexpectedly. Apple fixed this issue by improving bounds checking in the affected components. The fix is included in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
Potential Impact
Successful exploitation of this vulnerability may cause unexpected system termination, potentially leading to denial of service conditions. There is no indication of code execution or data corruption beyond system termination in the provided data.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6. These versions include improved bounds checking that resolves the out-of-bounds write issue. No other mitigations are specified.
CVE-2026-43761: Mounting a malicious disk image may cause unexpected system termination in Apple macOS
Description
CVE-2026-43761 is a vulnerability in Apple macOS where mounting a malicious disk image may cause unexpected system termination due to an out-of-bounds write issue. This issue has been addressed with improved bounds checking and fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
Affected software
Apple
macOS
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write triggered when mounting a malicious disk image on Apple macOS systems. The flaw could cause the system to terminate unexpectedly. Apple fixed this issue by improving bounds checking in the affected components. The fix is included in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
Potential Impact
Successful exploitation of this vulnerability may cause unexpected system termination, potentially leading to denial of service conditions. There is no indication of code execution or data corruption beyond system termination in the provided data.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6. These versions include improved bounds checking that resolves the out-of-bounds write issue. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.817Z
- State
- PUBLISHED
Threat ID: 6aa860f455bf5e2cf59d22dd
Added to database: 09/14/2026, 21:02:44 UTC
Last enriched: 09/14/2026, 22:24:15 UTC
Last updated: 09/15/2026, 02:01:22 UTC
Views: 2
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