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Microsoft October 2025 Patch Tuesday security updates

Security Patch Release
First reported
Last updated
Happening score
H score 55
3 unique sources, 3 articles

Summary

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Microsoft's October 2025 Patch Tuesday delivers security updates for 172 flaws, including six zero-days, creating immediate patching priority for Windows and related Microsoft products. The bundle includes eight Critical vulnerabilities, with both remote code execution and elevation of privilege issues in scope. Microsoft also says Windows 10 reaches end of support today, which makes this the last free security-update cycle for the operating system. One fix removes the ltmdm64.sys Agere Modem driver, which can stop related Fax modem hardware from functioning.

Related Happenings

Microsoft Windows June 2026 Patch Tuesday zero-day fixes (multiple vulnerabilities)

Security Patch Release
H score40 First: 10.06.2026 12:57 Last: 10.06.2026 12:57 Sources 1

About this happening: **Microsoft**'s **June 2026 Patch Tuesday** fixed **three Windows zero-days** that could yield **SYSTEM** access or bypass **BitLocker** on vulnerable systems.

Open Happening

Microsoft June 2026 Patch Tuesday record 206-vulnerability update

Security Patch Release
H score55 First: 10.06.2026 12:38 Last: 10.06.2026 12:38 Sources 1

About this happening: Microsoft shipped a **record 206-vulnerability** update for its software portfolio, including **three publicly disclosed flaws**. The release spans **Critical** and **Important**...

Open Happening

Microsoft June 2026 Patch Tuesday record security update bundle

Security Patch Release
H score36 First: 10.06.2026 01:07 Last: 10.06.2026 01:07 Sources 1

About this happening: **Microsoft** released a **record Patch Tuesday bundle** for **June 2026** that patches **nearly 200 security holes** across **Windows operating systems and supported software**,...

Open Happening

Microsoft June 2026 Patch Tuesday (200 flaws, 3 zero-days)

Security Patch Release
H score37 First: 09.06.2026 20:57 Last: 09.06.2026 20:57 Sources 1

About this happening: **Microsoft** released its **June 2026 Patch Tuesday**, delivering security updates for **200 flaws** and **three publicly disclosed zero-days** across Windows and related compone...

Open Happening

Microsoft security patch release for CVE-2026-45586

Security Patch Release
H score41 First: 09.06.2026 20:57 Last: 09.06.2026 20:57 Sources 1

About this happening: Microsoft's **June 2026 Patch Tuesday** delivers **200 flaw fixes** across Windows and related products, including **six zero-days** and **one actively exploited** vulnerability....

Open Happening

Timeline

  1. 14.10.2025 21:02 3 articles · 8mo ago

    Microsoft releases October 2025 Patch Tuesday updates

    Initial Disclosure

    Microsoft releases October 2025 security updates covering 172 flaws and six zero-days, including eight Critical vulnerabilities across Windows SMB Server, Microsoft SQL Server, Windows Remote Access Connection Manager, IGEL OS before 11, AMD EPYC SEV-SNP, and TCG TPM 2.0.

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  2. 14.10.2025 21:02 1 articles · 8mo ago

    Microsoft removes the vulnerable Agere Modem driver

    Mitigation Patch Update

    Microsoft removes the vulnerable ltmdm64.sys Agere Modem driver in the October cumulative update after it was abused for local privilege escalation, and related Fax modem hardware ceases functioning.

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  3. 14.10.2025 21:02 1 articles · 8mo ago

    Windows 10 reaches end of support

    Legal Policy Action Update

    Windows 10 reaches end of support today, ending free security updates for the operating system; consumers can enroll in one year of Extended Security Updates (ESU), and enterprises can enroll for up to three years.

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