Apple · Macos Big Sur · CVE-2023-27961
**Name of the Vulnerable Software and Affected Versions**
macOS versions prior to 13.3
iOS versions prior to 16.4
iPadOS versions prior to 16.4
iOS versions prior to 15.7.4
iPadOS versions prior to 15.7.4
macOS Monterey versions prior to 12.6.4
watchOS versions prior to 9.4
macOS Big Sur versions prior to 11.7.5
**Description**
Multiple validation issues were addressed with improved input sanitization. Importing a maliciously crafted calendar invitation may exfiltrate user information.
**Recommendations**
For macOS versions prior to 13.3, update to macOS Ventura 13.3.
For iOS versions prior to 16.4, update to iOS 16.4.
For iPadOS versions prior to 16.4, update to iPadOS 16.4.
For iOS versions prior to 15.7.4, update to iOS 15.7.4.
For iPadOS versions prior to 15.7.4, update to iPadOS 15.7.4.
For macOS Monterey versions prior to 12.6.4, update to macOS Monterey 12.6.4.
For watchOS versions prior to 9.4, update to watchOS 9.4.
For macOS Big Sur versions prior to 11.7.5, update to macOS Big Sur 11.7.5.