Mmastodon TechnologyCybersecurity first seen 2 d ago, last 2 d ago, peak #9

Microsoft fixes heap buffer overflow in Windows Program Compatibility Assistant

Original: 🚨 EUVD-2026-73016 📊 Score: 7.0/10 (CVSS v3.1) 📦 Product: Windows Server 2019, Windows 11 Version 25H2, Windows 10 Versio

A newly catalogued vulnerability, EUVD-2026-73016, describes a heap-based buffer overflow in the Windows Program Compatibility Assistant affecting Microsoft Windows Server 2019, Windows 11 Version 25H2, Windows 10 Version 21H2 and more than a dozen other Windows versions. The flaw carries a CVSS v3.1 severity score of 7.0, classifying it as high severity. It was published on 8 September 2026 and updated on 7 October 2026, and security teams are being urged to check their systems for patched versions.

Why now: System administrators and security researchers are tracking a newly published high-severity Windows vulnerability that affects a wide range of Microsoft versions.

MicrosoftWindows 11Windows 10Windows Server 2019Program Compatibility Assistant

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Evidence

• 🚨 EUVD-2026-73016 📊 Score: 7.0/10 (CVSS v3.1) 📦 Product: Windows Server 2019, Windows 11 Version 25H2, Windows 10 Version 21H2 (+12 more) 🏢 Vendor: Microsoft 📅 Published: 2026-09-08 | Updated: 2026-10-07 📝 Heap-based buffer overflow in Windows Program Compatibility Assistant… · EUVD_Bot

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