Patch Tuesday Updates: September 2025

Patch Tuesday Updates: September 2025

Good day, everyone!

Here's a list of the updates released in this month's Patch Tuesday.

New OS Security Updates:

  • 42320 - 2025-09 Security Only Quality Update for Windows Server 2008 R2 for x64-based Systems (KB5065510) (CVE-2025-55234) (ESU)
  • 42321 - 2025-09 Security Only Quality Update for Windows Server 2008 for x86-based Systems (KB5065511) (CVE-2025-55234) (ESU)
  • 42322 - 2025-09 Security Only Quality Update for Windows Server 2008 for x64-based Systems (KB5065511) (CVE-2025-55234) (ESU)
  • 42323 - 2025-09 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB5065468) (CVE-2025-55234) (ESU)
  • 42324 - 2025-09 Security Monthly Quality Rollup for Windows Server 2008 for x64-based Systems (KB5065508) (CVE-2025-55234) (ESU)
  • 42325 - 2025-09 Security Monthly Quality Rollup for Windows Server 2008 for x86-based Systems (KB5065508) (CVE-2025-55234) (ESU)
  • 42326 - 2025-09 Security Monthly Quality Rollup for Windows Server 2012 R2 for x64-based Systems (KB5065507) (CVE-2025-55234) (ESU)
  • 42327 - 2025-09 Security Monthly Quality Rollup for Windows Server 2012 for x64-based Systems (KB5065509) (CVE-2025-55234) (ESU)
  • 42328 - 2025-09 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5065429) (CVE-2025-55234)
  • 42329 - 2025-09 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5065429) (CVE-2025-55234)
  • 42330 - 2025-09 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5065429) (CVE-2025-55234)
  • 42331 - 2025-09 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5065429) (CVE-2025-55234)
  • 42332 - 2025-09 Cumulative Update for Windows 11 Version 23H2 for x64-based Systems (KB5065431) (CVE-2025-55234)
  • 42333 - 2025-09 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5065431) (CVE-2025-55234)
  • 42334 - 2025-09 Cumulative Update for Windows 11 Version 23H2 for arm64-based Systems (KB5065431) (CVE-2025-55234)
  • 42335 - 2025-09 Cumulative Update for Windows 11 Version 22H2 for arm64-based Systems (KB5065431) (CVE-2025-55234)
  • 42336 - 2025-09 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5065432) (CVE-2025-55234)
  • 42337 - 2025-09 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5065426) (26200.6584) (CVE-2025-55234)
  • 42338 - 2025-09 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5065426) (26200.6584) (CVE-2025-55234)
  • 42339 - 2025-09 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5065426) (26100.6584) (CVE-2025-55234)
  • 42340 - 2025-09 Cumulative Update for Windows 11 Version 24H2 for arm64-based Systems (KB5065426) (26100.6584) (CVE-2025-55234)
  • 42341 - 2025-09 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5065426) (26100.6584) (CVE-2025-55234)
  • 42342 - 2025-09 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5065427) (CVE-2025-55234)
  • 42343 - 2025-09 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5065427) (CVE-2025-55234)
  • 42344 - 2025-09 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5065427) (CVE-2025-55234)
  • 42345 - 2025-09 Cumulative Update for Microsoft server operating system version 23H2 for x64-based Systems (KB5065425) (CVE-2025-55234)
  • 42346 - 2025-09 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5065428) (CVE-2025-55234)
  • 42347 - 2025-09 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5065428) (CVE-2025-55234)
  • 42348 - 2025-09 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5065428) (CVE-2025-55234)
  • 42349 - 2025-09 Cumulative Update for Windows 10 Version 1507 for x64-based Systems (KB5065430) (CVE-2025-55234)
  • 42350 - 2025-09 Cumulative Update for Windows 10 Version 1507 for x86-based Systems (KB5065430) (CVE-2025-55234)
  • 42351 - KB5065955, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10 Version 1809 (KB5065744)
  • 42352 - KB5065955, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows Server 2019 for x64 (KB5065744)
  • 42353 - KB5065955, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10 Version 1809 for x64 (KB5065744)
  • 42354 - KB5065962, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system version 21H2 for x64 (KB5065748)
  • 42355 - KB5065955, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2019 for x64 (KB5065755)
  • 42356 - KB5065955, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1809 (KB5065755)
  • 42357 - KB5065955, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1809 for x64 (KB5065755)
  • 42358 - KB5065956, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 for x64 (KB5064399)
  • 42359 - KB5065957, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 for x64 (KB5064399)
  • 42360 - KB5065957, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 (KB5064399)
  • 42361 - KB5065956, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 (KB5064399)
  • 42362 - KB5065962, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5065753)
  • 42363 - KB5065956, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5064400)
  • 42364 - KB5065957, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 22H2 (KB5064400)
  • 42365 - KB5065956, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 (KB5064400)
  • 42366 - KB5065957, 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 22H2 for x64 (KB5064400)
  • 42367 - 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for x64 (KB5066613)
  • 42368 - 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for arm64 (KB5066613)
  • 42369 - 2025-09 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1607 for x64 (KB5065749)
  • 42370 - 2025-09 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1607 (KB5065749)
  • 42371 - 2025-09 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 for x64 (KB5065749)
  • 42372 - 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 24H2 for x64 (KB5064401)
  • 42373 - 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 24H2 for arm64 (KB5064401)
  • 42374 - 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for arm64 (KB5064401)
  • 42375 - 2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for x64 (KB5064401)
  • 42376 - 2025-09 Servicing Stack Update for Windows 10 Version 1507 for x86-based Systems (KB5065766)
  • 42377 - 2025-09 Servicing Stack Update for Windows 10 Version 1507 for x64-based Systems (KB5065766)
  • 42378 - 2025-09 Servicing Stack Update for Windows Server 2016 for x64-based Systems (KB5065687)
  • 42379 - 2025-09 Servicing Stack Update for Windows 10 Version 1607 for x64-based Systems (KB5065687)
  • 42380 - 2025-09 Servicing Stack Update for Windows 10 Version 1607 for x86-based Systems (KB5065687)
  • 42381 - 2025-09 Servicing Stack Update for Windows Server 2012 R2 for x64-based Systems (KB5065767) (ESU)
  • 42382 - 2025-09 Servicing Stack Update for Windows Server 2012 for x64-based Systems (KB5065768) (ESU)
  • 42383 - 2025-09 Cumulative Security Update for Internet Explorer 11 for Windows Server 2012 for x64-based systems (KB5065435) (ESU)
  • 42384 - 2025-09 Cumulative Security Update for Internet Explorer 11 for Windows Server 2012 R2 for x64-based systems (KB5065435) (ESU)
  • 42385 - 2025-09 Cumulative Security Update for Internet Explorer 11 for Windows Server 2008 R2 for x64-based systems (KB5065435) (ESU)
  • 42386 - 2025-09 Cumulative Security Update for Internet Explorer 9 for Windows Server 2008 for x64-based systems (KB5065435) (ESU)
  • 42387 - 2025-09 Cumulative Security Update for Internet Explorer 9 for Windows Server 2008 for x86-based systems (KB5065435) (ESU)
  • 42388 - KB5065958, 2025-09 Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2008 R2 for x64 (KB5065745) (ESU)
  • 42389 - KB5065961, 2025-09 Security and Quality Rollup for .NET Framework 4.6.2 for Windows Server 2008 SP2 (KB5065745) (ESU)
  • 42390 - KB5065961, 2025-09 Security and Quality Rollup for .NET Framework 4.6.2 for Windows Server 2008 SP2 for x64 (KB5065745) (ESU)
  • 42391 - KB5065960, 2025-09 Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 R2 for x64 (KB5065747) (ESU)
  • 42392 - KB5065959, 2025-09 Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 for x64 (KB5065746) (ESU)
  • 42393 - KB5065958, 2025-09 Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2008 R2 for x64 (KB5065750) (ESU)
  • 42394 - KB5065960, 2025-09 Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 R2 for x64 (KB5065752) (ESU)
  • 42395 - KB5065959, 2025-09 Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 for x64 (KB5065751) (ESU)

Supported Zero-day CVE: 1

CVE-2025-55234 - Windows SMB Elevation of Privilege Vulnerability

patchidbulletiniddescription
42320MS25-SEP22025-09 Security Only Quality Update for Windows Server 2008 R2 for x64-based Systems (KB5065510) (CVE-2025-55234) (ESU)
42321MS25-SEP22025-09 Security Only Quality Update for Windows Server 2008 for x86-based Systems (KB5065511) (CVE-2025-55234) (ESU)
42322MS25-SEP22025-09 Security Only Quality Update for Windows Server 2008 for x64-based Systems (KB5065511) (CVE-2025-55234) (ESU)
42323MS25-SEP62025-09 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB5065468) (CVE-2025-55234) (ESU)
42324MS25-SEP62025-09 Security Monthly Quality Rollup for Windows Server 2008 for x64-based Systems (KB5065508) (CVE-2025-55234) (ESU)
42325MS25-SEP62025-09 Security Monthly Quality Rollup for Windows Server 2008 for x86-based Systems (KB5065508) (CVE-2025-55234) (ESU)
42326MS25-SEP62025-09 Security Monthly Quality Rollup for Windows Server 2012 R2 for x64-based Systems (KB5065507) (CVE-2025-55234) (ESU)
42327MS25-SEP62025-09 Security Monthly Quality Rollup for Windows Server 2012 for x64-based Systems (KB5065509) (CVE-2025-55234) (ESU)
42328MS25-SEP32025-09 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5065429) (CVE-2025-55234)
42329MS25-SEP32025-09 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5065429) (CVE-2025-55234)
42330MS25-SEP32025-09 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5065429) (CVE-2025-55234)
42331MS25-SEP32025-09 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5065429) (CVE-2025-55234)
42332MS25-SEP32025-09 Cumulative Update for Windows 11 Version 23H2 for x64-based Systems (KB5065431) (CVE-2025-55234)
42333MS25-SEP32025-09 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5065431) (CVE-2025-55234)
42334MS25-SEP32025-09 Cumulative Update for Windows 11 Version 23H2 for arm64-based Systems (KB5065431) (CVE-2025-55234)
42335MS25-SEP32025-09 Cumulative Update for Windows 11 Version 22H2 for arm64-based Systems (KB5065431) (CVE-2025-55234)
42336MS25-SEP32025-09 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5065432) (CVE-2025-55234)
42337MS25-SEP32025-09 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5065426) (26200.6584) (CVE-2025-55234)
42338MS25-SEP32025-09 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5065426) (26200.6584) (CVE-2025-55234)
42339MS25-SEP32025-09 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5065426) (26100.6584) (CVE-2025-55234)
42340MS25-SEP32025-09 Cumulative Update for Windows 11 Version 24H2 for arm64-based Systems (KB5065426) (26100.6584) (CVE-2025-55234)
42341MS25-SEP32025-09 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5065426) (26100.6584) (CVE-2025-55234)
42342MS25-SEP32025-09 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5065427) (CVE-2025-55234)
42343MS25-SEP32025-09 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5065427) (CVE-2025-55234)
42344MS25-SEP32025-09 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5065427) (CVE-2025-55234)
42345MS25-SEP32025-09 Cumulative Update for Microsoft server operating system version 23H2 for x64-based Systems (KB5065425) (CVE-2025-55234)
42346MS25-SEP32025-09 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5065428) (CVE-2025-55234)
42347MS25-SEP32025-09 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5065428) (CVE-2025-55234)
42348MS25-SEP32025-09 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5065428) (CVE-2025-55234)
42349MS25-SEP32025-09 Cumulative Update for Windows 10 Version 1507 for x64-based Systems (KB5065430) (CVE-2025-55234)
42350MS25-SEP32025-09 Cumulative Update for Windows 10 Version 1507 for x86-based Systems (KB5065430) (CVE-2025-55234)


Cheers,
The ManageEngine Team


        New to M365 Manager Plus?
        New to M365 Manager Plus?
          New to RecoveryManager Plus?
          New to RecoveryManager Plus?
            New to Exchange Reporter Plus?
            New to Exchange Reporter Plus?
              New to SharePoint Manager Plus?
              New to SharePoint Manager Plus?
                See all integrations
                New to ADManager Plus?
                See all integrations
                New to ADManager Plus?

                  New to ADSelfService Plus?

                  Start your free trial
                  Start your free trial

                        Related Products