CVE-2026-64699: An app may be able to disclose kernel memory in Apple macOS
A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to disclose kernel memory.
AI Analysis
Technical Summary
CVE-2026-64699 is a vulnerability in Apple macOS involving improper memory initialization that may enable an application to disclose kernel memory contents. The issue was resolved by Apple through improved memory handling in specific macOS releases: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS v3.1 base score is 5.5, reflecting a medium severity with a local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact without integrity or availability impact.
Potential Impact
An attacker with local access and the ability to execute an application could potentially disclose sensitive kernel memory contents, leading to information disclosure. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 or later. No other mitigation guidance is provided or required as the issue is addressed in these updates.
CVE-2026-64699: An app may be able to disclose kernel memory in Apple macOS
Description
A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to disclose kernel memory.
CVSS v3.1
Score 5.5medium
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64699 is a vulnerability in Apple macOS involving improper memory initialization that may enable an application to disclose kernel memory contents. The issue was resolved by Apple through improved memory handling in specific macOS releases: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS v3.1 base score is 5.5, reflecting a medium severity with a local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact without integrity or availability impact.
Potential Impact
An attacker with local access and the ability to execute an application could potentially disclose sensitive kernel memory contents, leading to information disclosure. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 or later. No other mitigation guidance is provided or required as the issue is addressed in these updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-20T18:09:01.158Z
- State
- PUBLISHED
Threat ID: 6a67c1bf9c2644c7f8cb12bf
Added to database: 07/27/2026, 20:38:23 UTC
Last enriched: 07/29/2026, 23:56:21 UTC
Last updated: 09/11/2026, 22:06:34 UTC
Views: 41
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