CVE-2026-43822
A critical use‑after‑free bug in Apple’s operating systems can let a malicious app crash the device. The flaw was fixed in the latest releases of iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. Users should update to those versions to protect their devices.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Apple devices running iOS 26.5 or earlier, iPadOS 26.5 or earlier, macOS Sequoia 15.7.7 or earlier, macOS Sonoma 14.8.7 or earlier, macOS Tahoe 26.5 or earlier, tvOS 26.5 or earlier, visionOS 26.5 or earlier, and watchOS 26.5 or earlier.
Real-world impact
An attacker could run a specially crafted app that triggers the bug, causing the device to crash and potentially interrupting critical tasks or services.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network with no authentication or user interaction, and it can completely compromise confidentiality, integrity, and availability.
What to do about it
- 011. Update your device to the latest OS version (iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, or watchOS 26.6).
- 022. Restart the device after 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/128066release notesvendor advisory
- support.apple.com/en-us/128067release notesvendor advisory
- support.apple.com/en-us/128068release 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
- support.apple.com/en-us/128072release notesvendor advisory