IT SBIT Services
Schneeberger
DEEN
Patch Tuesday

Patch Tuesday July 2026 – known issues, zero-days and what to do

On 14 Jul 2026 Microsoft fixed 663 vulnerabilities – critical: 75, already exploited (zero-days): 3. Known issues with the updates: none known.

663vulnerabilities
75critical
3zero-days
0known issues

What to do now

  • Zero-days first: 3 vulnerabilities are already being exploited (CVE-2026-58644, CVE-2026-56155, CVE-2026-56164) – install the updates as soon as possible, starting with servers and exposed systems.
  • 75 critical vulnerabilities (mainly Windows, Microsoft Office, Browser (Edge)) – roll out promptly after a short test.
  • Taking effect on 30 Jul 2026: “Edge: Translation stops working on versions earlier than 136 after July 30, 2026” – check in good time.
  • No issues are known so far with the updates of this month – test and roll out as usual.

Zero-days: already exploited

Critical vulnerabilities (60)

Show 54 more critical vulnerabilities

Updates (KB) of this month

KB numbers according to the Security Update Guide; known issues from our update issues – click a KB to see all its entries.

UpdateProduct familyVulnerabilitiesKnown issues
KB5099536Windows379none known
KB5101650Windows372none known
KB5101649Windows358none known
KB5099540Windows318none known
KB5099539Windows308none known
KB5099538Windows304none known
KB5002891Microsoft Office39none known
KB5002883Microsoft Office39none known
KB5002882Microsoft Office38none known
KB5002884Microsoft Office33none known
KB5002886Microsoft Office32none known
KB5099535Windows25none known
Show 44 more updates
UpdateProduct familyVulnerabilitiesKnown issues
KB5002887Microsoft Office23none known
KB5002885Microsoft Office22none known
KB5002892Microsoft Office22none known
KB5099414Windows17none known
KB5099444Windows16none known
KB5099445Windows15none known
KB5104032Developer tools (.NET, Visual Studio …)14none known
KB5104034Developer tools (.NET, Visual Studio …)13none known
KB5104033Developer tools (.NET, Visual Studio …)13none known
KB5101007Developer tools (.NET, Visual Studio …)13none known
KB5002890Microsoft Office12none known
KB5101009Developer tools (.NET, Visual Studio …)12none known
KB5101011Developer tools (.NET, Visual Studio …)10none known
KB5101008Developer tools (.NET, Visual Studio …)8none known
KB5101346SQL Server6none known
KB5101006Developer tools (.NET, Visual Studio …)5none known
KB5101002Developer tools (.NET, Visual Studio …)5none known
KB5102333SQL Server4none known
KB5102336SQL Server4none known
KB5101347SQL Server4none known
KB5103215Windows ESU (Extended Security Updates)4none known
KB5103214Windows ESU (Extended Security Updates)4none known
KB5103213Windows ESU (Extended Security Updates)4none known
KB5103212Windows ESU (Extended Security Updates)4none known
KB5101010Windows4none known
KB5101014Developer tools (.NET, Visual Studio …)4none known
KB5102339SQL Server3none known
KB5002867Microsoft Office3none known
KB5095051Windows3none known
KB5102334SQL Server2none known
KB5102335SQL Server2none known
KB5002748Microsoft Office2none known
KB5002273Microsoft Office2none known
KB5102338SQL Server2none known
KB5102340SQL Server2none known
KB5094042Windows1none known
KB5094041Windows1none known
KB5102337SQL Server1none known
KB5002830Microsoft Office1none known
KB5002880Microsoft Office1none known
KB5002874Microsoft Office1none known
KB5002873Microsoft Office1none known
KB5099415Windows1none known
KB5100991Developer tools (.NET, Visual Studio …)1none known

Known issues with the updates

No issues are known so far with the updates of this month.

Dated changes this month

By product family

  • Windows410
  • Microsoft Office100
  • Browser (Edge)68
  • Developer tools (.NET, Visual Studio …)28
  • Azure16
  • Other12
  • SQL Server9
  • Apps7

More about this month

Where the information comes from

Fixed vulnerabilities, severity, zero-days and KB numbers come from the official Microsoft Security Update Guide (MSRC); known issues, workarounds and dated changes from our update issues, each with its source. “What to do now” is derived from this data using fixed rules, without AI.

Affected? We can help.

We check whether your systems are affected, apply workarounds properly and plan for dated changes in good time.

Get in touchAll known issues after updates