# Microsoft fixes record 964 flaws, including 2 exploited zero-days

DevFeed: [Microsoft fixes record 964 flaws, including 2 exploited zero-days](<https://devfeed.tech/articles/microsoft-fixes-record-964-flaws-including-2-exploited-zero-days-8439.md>)

Original publisher: [Read original article](<https://www.malwarebytes.com/blog/news/2026/09/microsoft-fixes-record-964-flaws-including-2-exploited-zero-days>)

Author: Pieter Arntz

Published: 2026-09-09T10:01:08Z

Content type: news

Language: en

Sources: [Malwarebytes](<https://devfeed.tech/sources/malwarebytes.md>)

Topics: [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>)

Tags: [bugs](<https://devfeed.tech/tags/bugs.md>), [cve-2026-81963](<https://devfeed.tech/tags/cve-2026-81963.md>), [cve-2026-85880](<https://devfeed.tech/tags/cve-2026-85880.md>), [dns](<https://devfeed.tech/tags/dns.md>), [microsoft](<https://devfeed.tech/tags/microsoft.md>), [news](<https://devfeed.tech/tags/news.md>), [patch-tuesday](<https://devfeed.tech/tags/patch-tuesday.md>), [september-2026](<https://devfeed.tech/tags/september-2026.md>), [vulnerabilities](<https://devfeed.tech/tags/vulnerabilities.md>), [windows](<https://devfeed.tech/tags/windows.md>)

## AI overview

Microsoft's September 2026 Patch Tuesday fixes 964 customer-patched vulnerabilities, including two actively exploited Windows zero-days.

## Source excerpt

Microsoft's September 2026 Patch Tuesday fixes a record 964 vulnerabilities, including two actively exploited zero-days.