# Apple Introduces iOS 18.3.1 and iPadOS 18.3.1 Featuring Essential Security Updates
Apple has commenced the distribution of vital security updates for its iPhones and iPads through the launch of **iOS 18.3.1** and **iPadOS 18.3.1**. These updates rectify a critical security flaw in **USB Restricted Mode**, which is intended to safeguard devices from unauthorized data access through USB interfaces.
## **Major Security Enhancements**
As per Apple’s [official release notes](https://support.apple.com/en-us/122174), these updates resolve a vulnerability identified as **CVE-2025-24200**, which has allegedly been exploited in **extremely sophisticated attacks** directed at select individuals. Although Apple has not provided additional information on the specifics of these attacks or the individuals impacted, the pressing nature of this fix implies a significant security threat.
### **Understanding USB Restricted Mode**
USB Restricted Mode functions as a security measure that mandates users to **unlock their device periodically** in order to sustain USB data connections via the **Lightning or USB-C port**. This feature prevents unauthorized individuals from accessing a device’s data if it comes into unwanted possession.
## **Updates for Legacy Devices**
Apple has additionally launched **iPadOS 17.7.5** for older iPad models, ensuring the following devices:
– **2nd-generation 12.9-inch iPad Pro**
– **10.5-inch iPad Pro**
– **6th-generation iPad**
…are also provided with the same security update.
## **Additional Apple Software Releases**
In conjunction with the iOS and iPadOS updates, Apple has also made security updates available for its various other operating systems:
– **macOS Sequoia 15.3.1**
– **macOS Sonoma 14.7.4**
– **macOS Ventura 13.7.4**
– **watchOS 11.3.1**
– **visionOS 2.3.1**
While Apple has yet to confirm whether these updates address any specific known security vulnerabilities, users are advised to install them promptly.
## **Re-Enabled Apple Intelligence Issue**
Certain users have indicated that **Apple Intelligence**—Apple’s AI-driven features—has been **reactivated automatically** following the update installation, even if they had previously disabled it.
Per [9to5Mac](https://9to5mac.com/2025/02/11/bug-in-macos-and-ios-updates-re-enables-apple-intelligence-for-some-whod-opted-out/), this phenomenon was noted on macOS 15.3.1, but not consistently on iPhones using iOS 18.3.1.
### **Implications for Users**
– If you had **turned off Apple Intelligence**, verify your settings after the update to confirm it remains deactivated.
– If you are upgrading from a version **older than iOS 18.3 or macOS 15.3**, Apple Intelligence will be **activated by default** if your device supports it.
## **Is Updating Recommended?**
Absolutely. In light of the fact that **CVE-2025-24200** was actively exploited, it is strongly advised to update to **iOS 18.3.1, iPadOS 18.3.1, and other revised versions** to shield your device from potential security hazards.
To update your device:
1. **Navigate to Settings** > **General** > **Software Update**
2. **Download and install** the newest update
For Mac users:
1. **Navigate to System Settings** > **General** > **Software Update**
2. **Implement the latest macOS update**
By keeping your devices current, you can ensure they remain safeguarded against budding threats.
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### **Stay Informed**
For further information regarding Apple’s security updates, visit [Apple’s security updates page](https://support.apple.com/en-us/100100).
