PT-2026-58424 · Microsoft · Windows Server 2016+7

CVE-2026-50447 · Published 2026-07-14 · Updated 2026-07-21

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Windows 10 Windows 11 Windows Server versions 2012 through 2025

Description A heap-based buffer overflow exists in Windows Message Queuing (MSMQ), a service used for asynchronous communication between applications. This flaw allows an unauthorized and unauthenticated attacker to execute arbitrary code over a network.

Recommendations Update Windows 10 to the latest patched version. Update Windows 11 to the latest patched version. Update Windows Server versions 2012 through 2025 to the latest patched version.

Fix

DoS

RCE

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

BDU:2026-09960

CVE-2026-50447

Affected Products

Windows

Windows 10

Windows 11

Windows Server 2012

Windows Server 2016

Windows Server 2019

Windows Server 2022

Windows Server 2025

References · 8

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-50447 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-50447 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50447 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-50447 · Security Note
• https://bdu.fstec.ru/vul/2026-09960 · Security Note
• https://twitter.com/SecAlertsCo/status/2077433720122835186 · Twitter Post
• https://t.me/cveNotify/209226 · Telegram Post
• https://vulnipulse.com/vendors/microsoft · Reddit Post