2026-09 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5126149)
Published Sep 30, 2026
Modified -13 days ago
Fix available
Details
Synthesized supersedence anchor for an out-of-band cumulative update that has no CVRF entry. CVEs are inherited from superseded source KBs at scan time.