Cloud & SysadminMicrosoft Ships New Windows 11 Cumulative Updates for 25H2, 24H2, and 23H2
KB5121003 and KB5120240 patch security holes and squash bugs across the current lineup of supported Windows 11 versions.
Why it matters: Security patches like these are the least glamorous but most important updates most people install all year, since unpatched vulnerabilities are a favorite entry point for attackers targeting consumer and business PCs alike. If you manage multiple machines across 23H2, 24H2, and 25H2, it's worth double-checking which KB applies to each before assuming they're interchangeable.