CVE-2026-43710
A critical memory handling flaw in macOS can cause the system to crash or corrupt kernel memory. The issue has been fixed in newer releases of macOS Sequoia, Sonoma, and Tahoe. Users should update to the latest version to protect their systems.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
macOS Sequoia, Sonoma, and Tahoe users running versions older than 15.7.8, 14.8.8, and 26.6 respectively.
Real-world impact
An attacker could force the operating system to terminate unexpectedly or corrupt critical memory, potentially leading to denial of service or privilege escalation.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network without authentication, requires no user interaction, and can compromise confidentiality, integrity, and availability of the entire system.
What to do about it
- 011. Update macOS to at least Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6.
- 022. Restart the computer to complete the update.
NVD-referenced vendor advisory
Timeline
- Jul 27, 2026 · 3d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 28, 2026 · 2d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
How it’s attacked
References & advisories
- support.apple.com/en-us/128067release notesvendor advisory
- support.apple.com/en-us/128071release notesvendor advisory
- support.apple.com/en-us/128072release notesvendor advisory