Three out of the four flaws fixed with iOS 12.1.4 were exploited in the wild

CVE-2019-7286 is a memory corruption flaw (an out-of-bounds write, CWE-787) in Apple's iOS and macOS that Apple addressed with improved input validation. It is triggered locally: the CVSS vector shows a local attack vector requiring user interaction, and an application that corrupts memory through the flaw may gain elevated privileges with high impact on confidentiality, integrity, and availability. Users running iPhones or iPads on iOS before 12.1.4, or macOS Mojave systems without the 10.14.3 Supplemental Update, are affected. The vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog (added 2022-05-23), which indicates confirmed exploitation in the wild, and EPSS assigns it a 15.6% probability of exploitation within 30 days (97th percentile). No public proof-of-concept is catalogued, but defenders should treat it as actively exploited.

Do: Update all iPhones and iPads to iOS 12.1.4 or later and apply the macOS Mojave 10.14.3 Supplemental Update (or a later macOS release) on Macs, per the CISA KEV required action. Inventory for devices that cannot run the fixed versions, restrict untrusted applications on them or retire them, since the flaw allows local apps to gain elevated privileges. Given the KEV listing, treat this as an actively exploited vulnerability and prioritize patching in any KEV-driven remediation program.

Apple iOS versions prior to 12.1.4 contain a memory corruption flaw — an out-of-bounds write (CWE-787) — which Apple fixed with improved input validation in iOS 12.1.4. Based on the flaw's CVSS scoring (local attack vector, user interaction required), it is triggered when a user opens or runs a malicious application on the device. A successful exploit lets that application execute arbitrary code with kernel privileges, giving the attacker full device control and access to all data on the phone. All Apple iPhones (iPhone OS) running iOS versions before 12.1.4 are affected. The vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog (added 2022-05-23), confirming known in-the-wild exploitation; EPSS currently assigns a 4.6% probability of exploitation activity within 30 days (91st percentile), no public proof-of-concept is cataloged, and ransomware use is unknown.

Do: Apply Apple's update without delay, per CISA KEV's required action: update all iPhones and iOS devices to iOS 12.1.4 or later. Inventory your fleet for devices still running iOS 12.1.3 or earlier and prioritize patching them; on unpatched legacy devices, avoid opening untrusted applications until updated. Where hardware allows, move older devices off iOS 12 to a currently supported iOS release.