Cybercriminals love repacked legacy software. They embed trojans, keyloggers, cryptocurrency miners, and ransomware into the installer. Since Office 2003 doesn’t receive security updates, attackers also exploit unpatched vulnerabilities in the suite itself to take over your system.
Modern file formats ( .docx , .xlsx , .pptx ) do not open correctly in Office 2003 without compatibility packs – which are also obsolete. You’ll struggle with documents created in newer versions. Microsoft Office 2003 Portable Download REPACK