# Microsoft Plugs Nearly 400 Security Holes

> **Newsylist Open Intelligence Dossier** · First detected: 2026-08-12 01:29 UTC · Category: Technology · Sources: 2 · Current Velocity: 3.54

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| SecurityWeek | August 2026 Patch Tuesday: Microsoft Fixes 421 CVEs, One Exploited Zero-Day | 2026-08-11 21:46 | [Source Link](https://news.google.com/rss/articles/CBMipgFBVV95cUxNbkxGZ0d6dk1faTZmVEM0aEl3XzU2YWdOQXFpNzlraUQ5ckJHODVyNlJvNU5uOW5scmhOWkpXdU1UMkhPM2MxOExUNmJGSVJQMjlhcnEtY0FYM3RDUWVSVFRZQ3JfVG1yWFY1MlMyN0h4V0JIbU0yUmhkWnVINURDQjJOb1l2UU1lZVg1eG1Fbm1DcjdKdkZ6NXdrZVFyQzJZS0xRNnFR0gGrAUFVX3lxTE1SbVNoZTJQZnlZbjFUdTUwcHNpQ3JMYTh4djRTZVA0Qkp1M0dlTVJrdDl4RWk0ZnlwcExhY1BrNHRocGFfeWpFZHBQelZobFFEcHpIN3NzXzRORHJfS200RkJ5Tm9BeGlCTVZON2hKYmpmeUE4TEl1aFlRX2JFaEVMZTJmUktJTkZMRFNSWWQxSVBuUHB5SVUxa2F6UlJuOTlVZTBHZXI4RC1tVQ?) |
| csoonline.com | Patch Tuesday August 2026: A zero-day WinSock driver hole under exploit, and a maximum severity SAP vulnerability | 2026-08-11 21:46 | [Source Link](https://news.google.com/rss/articles/CBMi7wFBVV95cUxOdHh5RTZlQjh0dHRzcmZpRm5WQ0E4YllVMlU2X0xZQ2FEUTd1MXJ0TW5hLThabFpEcUtvT2pjR0QtcUQ0Z3p2c1hNSWd0dGgzMC1qTF9Xb2FBR2k1WURjTFY2Rm9qMXpXOXhnRjgtMVM5R19Jd01VcjRPdDlqZm1KMmhobTJ3VU1SMDFkQzZKTEc4OUJFNjkyWklTZC0zS3ZidHRCaEpYcndfUE1sblhLbWV2STdMM05TS0huN21vbVdTWDZZdHIzelNaMzhhcmdnWGtVTVY0OGJDSDE4MlV3Y0g5M1A0eWlGZi1xZGIwWQ?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-08-12/microsoft-plugs-nearly-400-security-holes*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*