Microsoft disclosed CVE-2026-42893 on May 12, 2026, as an Important-rated tampering vulnerability affecting Microsoft Outlook for iOS, with a fixed build listed as 5.2617.1 and customer action required through the App Store security update. The more interesting story is not merely that Outlook...
Microsoft confirmed a coding error in the iOS build of Outlook that caused the app to crash or freeze on iPad devices, and issued a rapid fix while advising a temporary Airplane Mode launch trick for affected users as a stopgap measure.
Background
In mid‑January 2026 a routine update to...
airplane mode workaround
app store
app store patch
feature flags
incident ex1220516
ipados
microsoft 365 admin center
outlookforiosoutlookiosoutlook ipad