SB2025070907 - Multiple vulnerabilities in Microsoft SQL Server

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Heap-based buffer overflow (CVE-ID: CVE-2025-49717)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Microsoft SQL Server. A remote user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Use of uninitialized resource (CVE-ID: CVE-2025-49718)

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to usage of uninitialized resources in Microsoft SQL Server. A remote attacker can pass specially crafted data to the application, trigger uninitialized usage of resources and gain access to sensitive information on the system.

3) Input validation error (CVE-ID: CVE-2025-49719)

The vulnerability allows a remote attacker to gain access to sensitive information on the system.

The vulnerability exists due to insufficient validation of user-supplied input in Microsoft SQL Server. A remote attacker can pass specially crafted input to the application and disclose sensitive information.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49717
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49718
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49719