Upon receiving a malicious email, an iOS 16 'Mailjack' glitch causes the mail app to break down

Upon receiving a malicious email, an iOS 16 'Mailjack' glitch causes the mail app to break down ...

An iOS 16 bug is reportedly causing the Mail application on iPhone and iPad models that have been upgraded to the latest version of Apple''s operating system to crash. The bug comes in the form of an otherwise routine mail message, which contains additional characters that cause the Mail application to crash on iOS 16. The bug has been dubbed Mailjack, and allows any outsider to exclude iPhone and iPad users from their email accounts with a modified email.

Equinux''s VPN tracker identified the crash-triggering email. Generally, the from field has the sender''s name followed by their email address from: ""@example.com. Mail services such as Gmail, Outlook, and Hotmail automatically rewrite such inbound emails with unusual syntax to prevent such triggers.

While Gmail and Yahoo have placed filters in place to prevent such maliciously written emails altogether, Apple''s first-party iCloud Mail does not appear to have such rewriting or filtering techniques in place, according to reports.

The best way to avoid the trigger is to remove the message from the inbox or spam folder from a device that is running an older iOS version or via an external email client. Users may also move the trigger email to another subfolder on an IMAP email account. However, navigating to the respective subfolder will cause the application to crash again according to the website. Admins may also add the spelling ""@example.com to their list of blocked emails by email security software or firewall.

Equinux''s VPN Tracker has created a dedicated webpage where users may investigate the bug trigger by typing their email address. However, users are advised not to try this method as it may keep them from entering their emails unless they have access to an earlier iOS or external email client to delete the trigger message.