Vulnerabilities fixed in Microsoft Windows

Microsoft fixed vulnerabilities in Windows A malicious party can exploit the vulnerabilities to carry out attacks that can lead to the following categories of damage: - Denial-of-Service DoS - Manipulation of data - Accessing sensitive data - Execution of arbitrary code user privileges - Executio...

Windows Motorola Soft Modem Driver Elevation of Privilege Vulnerability

Microsoft is aware of vulnerabilities in the third party Motorola Soft Modem drivers that ships natively with supported Windows operating systems. This is an announcement of the upcoming removal of smserl64.sys and smserial.sys drivers. The drivers have been removed in the January cumulative...

January 13, 2026—KB5073457 (OS Build 20348.4648)

January 13, 2026—KB5073457 OS Build 20348.4648 This cumulative update for Windows Server 2022 KB5073457, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security updates,...

January 13, 2026—KB5073450 (OS Build 25398.2092)

January 13, 2026—KB5073450 OS Build 25398.2092 This cumulative update for Windows Server, version 23H2 KB5073450, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security...

January 13, 2026—KB5073699 (Security-only update)

January 13, 2026—KB5073699 Security-only update Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices for the...

KB5073699: Windows Server 2008 R2 Security Update (January 2026)

The remote Windows host is missing security update 5073699. It is, therefore, affected by multiple vulnerabilities - An issue was discovered in Broadcom LSI PCI-SV92EX Soft Modem Kernel Driver through 2.2.100.1 aka AGRSM64.sys. There is Local Privilege Escalation to SYSTEM via a Stack Overflow in...