CVE-2026-64772
A critical vulnerability (CVE‑2026‑64772) allows a remote attacker to write data beyond the intended memory bounds in Apple operating systems. This can cause applications to crash or corrupt memory, potentially leading to denial‑of‑service or more severe exploits. The flaw is fixed in newer releases of iOS, iPadOS, macOS, tvOS, and visionOS.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Apple devices running iOS, iPadOS, macOS, tvOS, or visionOS versions prior to the following releases: iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. Users of older versions are at risk.
Real-world impact
An attacker who can send crafted data to a vulnerable application can cause that application to crash or corrupt memory, which may lead to denial‑of‑service or enable further exploitation of the device.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability requires no authentication, no user interaction, and provides complete compromise of confidentiality, integrity, and availability. The out‑of‑bounds write can affect any process, making it highly dangerous.
What to do about it
- 01Upgrade your device to the latest OS version: iOS 26.6 or later, iPadOS 26.6 or later, macOS Sequoia 15.7.8 or later, macOS Tahoe 26.6 or later, tvOS 26.6 or later, or visionOS 26.6 or later.
- 02Restart the device after the update to ensure all components are refreshed.
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/128066release notesvendor advisory
- support.apple.com/en-us/128067release notesvendor advisory
- support.apple.com/en-us/128069release notesvendor advisory
- support.apple.com/en-us/128070release notesvendor advisory
- support.apple.com/en-us/128071release notesvendor advisory