The reason for the urgency is a "Zero-click Windows TCP/IP RCE impacts all systems with IPv6 enabled".
bleepingcomputer[.]com/news/microsoft/zero-click-windows-tcp-ip-rce-impacts-all-systems-with-ipv6-enabled-patch-now/
Otherwise...
bleepingcomputer[.]com/news/microsoft/microsoft-august-2024-patch-tuesday-fixes-9-zero-days-6-exploited/
bleepingcomputer[.]com/news/microsoft/windows-11-kb5041585-cumulative-update-released-with-fixes-new-features/
bleepingcomputer[.]com/news/microsoft/windows-10-kb5041580-update-released-with-14-fixes-security-updates/
... includes security updates for 89 flaws, including six actively exploited and three publicly disclosed zero-days. Microsoft is still working on an update for a tenth publicly disclosed zero-day.This Patch Tuesday fixed eight critical vulnerabilities, which were a mixture of elevation of privileges, remote code execution, and information disclosure.
The number of bugs in each vulnerability category is listed below:
36 Elevation of Privilege Vulnerabilities
4 Security Feature Bypass Vulnerabilities
28 Remote Code Execution Vulnerabilities
8 Information Disclosure Vulnerabilities
6 Denial of Service Vulnerabilities
7 Spoofing VulnerabilitiesThe number of bugs listed above do not include Microsoft Edge flaws that were disclosed earlier this month.
Microsoft also killed the update that kept showing error messages in Win10 if/when the recovery partition was nonexistent or too small.
neowin[.]net/news/microsoft-kills-unfixable-kb5034440kb5034441-updates-replaces-with-kb5042321kb5042320/
From time to time I've been posting about Microsoft's plans to better secure Windows boot loader by revoking old, insecure Secure Boot signatures to mitigate attacks like Black Lotus. Rather than changing the data stored in the BIOS, the BIOS is supposed to use newer lists on the boot [EFI] partition. And they've had problems with BIOS incompatibility. They've been very slowly rolling out changes to get ready for the switchover -- part of the July updates included some of that, which was incompatible with some [I assume additional] BIOS. They've turned that fix off as part of the August updates.
bleepingcomputer[.]com/news/microsoft/microsoft-disables-bitlocker-security-fix-advises-manual-mitigation/