Heap-based Buffer Overflow in Windows Routing and Remote Access Service by Microsoft
CVE-2025-49668

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Windows Server 2025 (server Core Installation)
Vendor
CVE Published:
8 July 2025

What is CVE-2025-49668?

A heap-based buffer overflow in the Windows Routing and Remote Access Service (RRAS) can be exploited by an unauthorized attacker to execute arbitrary code on affected systems. This vulnerability allows for remote code execution, making it imperative for organizations to implement adequate protections and timely updates to safeguard their networks from malicious activities.

Affected Version(s)

Windows Server 2008 Service Pack 2 x64-based Systems 6.0.6003.0 < 6.0.6003.23418

Windows Server 2008 R2 Service Pack 1 (Server Core installation) x64-based Systems 6.1.7601.0 < 6.1.7601.27820

Windows Server 2008 R2 Service Pack 1 x64-based Systems 6.1.7601.0 < 6.1.7601.27820

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-49668 : Heap-based Buffer Overflow in Windows Routing and Remote Access Service by Microsoft