Apple has published iOS 18.3, and if you have an iPhone, here’s the number one thing for you to do today: update! iOS 18.3 patches 29 vulnerabilities, including a critical flaw that has already been attacked by hackers.
What’s Vulnerable?
One of the critical issues patched in iOS 18.3 is a CoreMedia flaw (CVE-2025-24085) that allows malicious applications to escalate privileges, thus giving hackers access to your device at a more profound level. Apple has confirmed that this vulnerability has been actively exploited in the wild, meaning real-world attacks have already occurred.
Other Security Fixes
Apart from the CoreMedia exploit iOS 18.3 fixes two Kernel vulnerabilities that could have allowed malicious apps to gain root privileges. These are particularly dangerous as they attack the very core of iOS’s security structure.
WebKit, the engine behind Safari, also receives important fixes. One flaw in WebKit Web Inspector could allow hackers to execute operating system commands remotely, a nightmare scenario for users who browse the web frequently. Additionally, an AirPlay vulnerability (CVE-2025-24137) could let remote attackers crash apps or execute harmful code.
Passkeys, of course, are Apple’s alternative to passwords. They also sported a security hole that could have granted unauthorised Bluetooth access issues given the continued push toward using biometric authentication more extensively.
More than Just iPhones
It’s not just an iPhone affair-though that may get the biggest media attention security updates include iPads, Macs, Apple Watch, Apple TV and yes, even that newly released head-worn vision of the world. If you’re an owner of an Apple product, install it right now.
Why Delay?
The cybersecurity experts advise that the updates should be installed as soon as they are released. According to Michael Covington, VP of strategy at security firm Jamf, the fixes in iOS 18.3 protect against memory corruption, denial-of-service attacks and other web-based threats. Delaying the update leaves your device vulnerable to exploits that hackers are already aware of and actively using.
Additionally, iOS 18.3 introduces automatic AI features on iPhone 15 models and later. If you prefer to disable them, you’ll need to manually adjust your settings after updating.
Read More: DeepSeek Dethrones OpenAI’s ChatGPT on Apple’s App Store in the United States
Final Verdict
Updating to iOS 18.3 isn’t just about getting the latest features; it’s also about protecting your device from known security threats. Apple’s track record shows that once a vulnerability is disclosed, attackers work speedily to exploit it.
So don’t wait; update now to keep your iPhone and personal data secure.
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