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Microsoft SQL Server 0-Day Vulnerability Exposes Sensitive Data Over Network

A critical information disclosure vulnerability in Microsoft SQL Server, designated as CVE-2025-49719, allows unauthorized attackers to access sensitive data over network connections. This configuration enables remote attackers to potentially extract sensitive information from SQL Server instances exposed to network access, making it a prime target for automated exploitation tools and reconnaissance activities. The technical weakness allows attackers to exploit insufficient input validation routines, potentially accessing uninitialized memory regions that may contain sensitive database information, connection strings, or other confidential data structures. Organizations running SQL Server in cloud environments, particularly Windows Azure IaaS deployments, face additional exposure risks due to the broader network attack surface inherent in cloud infrastructure. The vulnerability affects multiple SQL Server versions from 2016 through 2022, with security updates released on July 8, 2025, to address this significant security concern. The vulnerability’s network accessibility means that any SQL Server instance reachable over TCP/IP connections could be vulnerable to information disclosure attacks.

This Cyber News was published on cybersecuritynews.com. Publication date: Wed, 09 Jul 2025 06:35:10 +0000


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