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Microsoft releases emergency .NET security fixes for Google Brotli bug

Published

26 October 2026

Topic

opportunities

◆ Sectors

Cybersecurity

◆ Geography

United States

◆ Source

Read at theregister.com →

◆ Verified

Fusion42 · 26 October 2026 · Fusion42 review

Microsoft has issued emergency security patches for .NET to address a critical vulnerability linked to Google's Brotli compression library.

This Wire brief sits within Fusion42's coverage of Cybersecurity, and 2 sources have reported it.

◆ ◆ The Wire takeaway

You must patch your .NET applications this week or risk exposure to the Brotli compression vulnerability Microsoft just fixed. This urgent update redefines security baseline for apps relying on Microsoft tech.

◆ Coverage

2 sources · 26 Oct 2026

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◆ Topics

Cybersecuritymicrosoftnetsecurity-fixbrotlivulnerability