Microsoft has just released its September 2026 Patch Tuesday updates, with the movable taskbar being the talk of the town, but there’s more to the story than fancy features. 974 Microsoft CVEs (Common Vulnerabilities and Exposures) overall have been addressed this month, and that includes at least 723 known vulnerabilities across the Windows product family.
Based on my analysis, 611 unique security flaws map specifically to Windows 11 24H2 and 25H2. My 611 count does not include Windows Server, so including Windows Server raises it to 723. And when you consider all Microsoft products covered by the release, you’ve got a huge 974 figure.
Unless you use the PC offline, I don’t think you should delay security updates anymore, and my recommendation aligns with Microsoft’s recently updated guidelines.
In July 2026, by more than three days, and if the update has a zero- or one-day deadline, it has a grace period of no more than two days. If you put that simply, do not pause Windows updates!
Microsoft says bad actors are using AI to come after your vulnerable products
Microsoft previously
Do not delay Windows 11’s September 2026 Update
Windows 11’s September 2026 Update is one security update I would not delay, as it fits Microsoft’s new recommendations.
In its the 974 figure.
The 974 CVEs, which is the number Microsoft’s own security release quotes, include vulnerabilities in products such as Office, SQL Server, Azure, Exchange Server, SharePoint Server, and developer tools.
Some of these products obviously run on Windows, but Microsoft tracks their vulnerabilities separately from the Windows product family.
Of those, Microsoft lists 723 vulnerabilities as addressed under the Windows product family, which covers multiple versions of Windows and Windows Server. Based on my calculations, 611 unique CVEs map specifically to Windows 11 25H2 and 24H2. Server-only vulnerabilities are not included in the 611 figure.
September 2026 security fixes
Count
Explanation
Microsoft security release
974
Microsoft CVEs across all affected product families
Windows product family
723
Windows and Windows Server vulnerabilities
Windows 11 24H2 and 25H2
611
Unique CVEs that map to the September 2026 fixed builds for Windows 11 24H2 and 25H2
For the Windows 11 calculation, I looked at Microsoft’s CVE data and counted unique vulnerabilities that map to Windows 11 24H2 Build 26100.9445 and Windows 11 25H2 Build 26200.9445, delivered with
Windows Update Stack
Elevation of privilege
Microsoft says exploitation has already been detected
Windows Graphics Kernel
Remote code execution
Could allow an authorized attacker to execute code
, which is an elevation-of-privilege vulnerability in the Windows Update Stack.
In its advisory, Microsoft says the vulnerability is caused by improper link resolution before file access in the Windows Update Stack, which could allow an authorized local attacker to elevate privileges.
Why are Microsoft security updates getting so much larger?
Windows has not suddenly turned into a security disaster, and Microsoft anticipated that we’d all be highlighting these huge numbers, so it was prepared with a valid explanation.
In May 2026, Microsoft itself appeared first on Windows Latest
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