Mirc 7.55 - Seupirate Apr 2026

In versions prior to 7.55, attackers could use malicious irc:// links to pass command-line arguments to mIRC.

Added a "Follow Windows Dark Mode" option and updated Aero theme support for MDI windows.

This allowed them to force the application to load a remote configuration file ( mirc.ini ) from an attacker-controlled server, potentially executing arbitrary code on the user's machine. mIRC 7.55 - SeuPirate

Updated various internal routines to use 32/64-bit compatible types as a step toward a future 64-bit version of the software. Technical Specifications Release Date Early 2019 License Shareware (30-day evaluation) Platform Windows (includes portable version support) Language

Beyond security, this version included several functional updates to improve the user experience on newer operating systems like Windows 10 and 11: In versions prior to 7

Changed the editbox in the Script Editor and status windows to use the msftedit.dll richedit control for better Unicode handling.

Updated the OpenSSL library (to v1.1.1b at the time of release) and the CA root certificates to ensure secure connections. For users still on older versions, upgrading is

For users still on older versions, upgrading is strongly recommended via the official mIRC download page to protect against the URI protocol vulnerability. Latest News - mIRC