Apple Ships iOS 18.7.9 with Unspecified Security Fixes
Apple released iOS 18.7.9 (build 22H355) on May 11, 2026, as a security-focused update addressing undisclosed vulnerabilities in the operating system.
Apple on Monday released iOS 18.7.9 (build 22H355), a security update for iPhone and iPad users that patches undisclosed vulnerabilities in the operating system. The update is available for all devices compatible with iOS 18 and arrives roughly three weeks after the previous point release, iOS 18.7.8. Apple's release notes do not detail the specific flaws addressed, but the company advises all users to install the update as soon as possible to protect against potential exploitation.
As is standard for Apple's rapid security response (RSR) and point releases, iOS 18.7.9 likely addresses one or more vulnerabilities that could allow an attacker to execute arbitrary code, escalate privileges, or bypass security restrictions. The lack of public CVE identifiers at the time of release suggests Apple may be withholding details until a broader investigation is complete or until a larger number of users have updated.
The update comes amid a busy period for Apple's security engineering team. In recent months, the company has shipped multiple iOS point releases to address actively exploited zero-day vulnerabilities, including CVE-2026-27893 in the Kernel and CVE-2026-27901 in WebKit, both of which were reported by independent researchers and government researchers. iOS 18.7.9 may include fixes for similar in-the-wild exploits that Apple has not yet publicly acknowledged.
Apple's security update mechanism allows the company to push fixes rapidly without requiring a full OS upgrade. iOS 18.7.9 can be installed via the Settings app under General > Software Update, or through a tethered update using a Mac or PC. Users running older versions of iOS are strongly encouraged to update, as unpatched devices remain vulnerable to any flaws addressed in this release.
The release also coincides with updates to other Apple operating systems, including iPadOS 18.7.9, macOS Sequoia 15.7.9, watchOS 11.7.9, and tvOS 18.7.9, all of which were released on the same day. Apple's practice of synchronizing point releases across platforms suggests that at least some of the vulnerabilities patched in iOS 18.7.9 may also affect other Apple devices.
Security researchers and enterprise administrators will be watching for Apple's security advisory page to be updated with CVE entries and technical details. In the meantime, users should treat iOS 18.7.9 as a critical update and apply it without delay. The update is available for iPhone XS and later, iPad Pro 12.9-inch (3rd generation) and later, iPad Air (3rd generation) and later, iPad (7th generation) and later, and iPad mini (5th generation) and later.