Heap-Based Buffer Overflow in Windows Routing and Remote Access Service by Microsoft
CVE-2025-33066

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
10 June 2025

What is CVE-2025-33066?

A heap-based buffer overflow in Microsoft's Windows Routing and Remote Access Service (RRAS) enables unauthorized attackers to execute arbitrary code remotely. This vulnerability arises from improper handling of memory allocation, potentially allowing an attacker to gain control over affected systems through network access. Organizations using affected versions of Windows Server should take immediate steps to patch the vulnerability to mitigate associated risks.

Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.10240.0 < 10.0.10240.21034

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8148

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.7434

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-2025-33066 : Heap-Based Buffer Overflow in Windows Routing and Remote Access Service by Microsoft