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Windows Server 2019
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- 1Microsoft fixes heap buffer overflow in Windows Program Compatibility Assistantโ๐จ EUVD-2026-73016 ๐ Score: 7.0/10 (CVSS v3.1) ๐ฆ 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.
- 2New Hyper-V vulnerability hits Windows Server versionsโ๐จ EUVD-2026-73017 ๐ Score: 7.1/10 (CVSS v3.1) ๐ฆ Product: Windows Server 2019, Windows Server 2025, Windows Server 2022 (
Microsoft's Windows Hyper-V has a missing-authorization flaw, tracked as EUVD-2026-73017, with a CVSS score of 7.1. It affects Windows Server 2019, 2022 and 2025, among other versions, and could allow an authorized attacker to elevate privileges. The advisory was published on 8 September 2026 and updated on 7 October 2026.
- 3Microsoft Windows vulnerability EUVD-2026-73018 rated 5.7โ๐จ EUVD-2026-73018 ๐ Score: 5.7/10 (CVSS v3.1) ๐ฆ Product: Windows 10 Version 1809, Windows 10 Version 21H2, Windows Serve
A medium-severity vulnerability, tracked as EUVD-2026-73018 and scored 5.7 out of 10 under CVSS v3.1, affects Microsoft Windows 10 versions 1809 and 21H2, Windows Server 2019 and more than a dozen other Microsoft products. The flaw involves the generation of error messages containing sensitive information. The advisory was published on 8 September 2026 and updated on 7 October 2026, and administrators are being urged to review whether their systems need patching.