Reprinted from TidBITS by permission; reuse governed by Creative Commons license BY-NC-ND 3.0. TidBITS has offered years of thoughtful commentary on Apple and Internet topics. For free email subscriptions and access to the entire TidBITS archive, visit http://www.tidbits.com/ Apple Updates Block Zero-Day Malicious Image Exploit Adam Engst Apple has released a set of emergency security updates, including [1]iOS 18.6.2 and iPadOS 18.6.2, [2]iPadOS 17.7.10, [3]macOS 15.6.1 Sequoia, [4]macOS 14.7.8 Sonoma, and [5]macOS 13.7.8 Ventura. The updates address a critical vulnerability in ImageIO that has been exploited. The ImageIO vulnerability, which Apple credits as being discovered internally, could allow an attacker to use a maliciously crafted image file to corrupt memory in an exploitable way. Apple acknowledged that this security flaw 'may have been exploited in an extremely sophisticated attack against specific targeted individuals.' This wording suggests that the vulnerability was weaponized for nation-state use in operations against high-value targets, likely involving spyware like Pegasus. Given the active exploitation, we recommend updating your devices promptly, especially if you are in a position that might be targeted by sophisticated attackers. While most users are extremely unlikely to be affected, there's no benefit in leaving your devices vulnerable in case the exploit is resold to less discerning attackers. References 1. https://support.apple.com/en-us/124925 2. https://support.apple.com/en-us/124926 3. https://support.apple.com/en-us/124927 4. https://support.apple.com/en-us/124928 5. https://support.apple.com/en-us/124929 .