CVE-2025-49669
Published: 08 July 2025
Summary
CVE-2025-49669 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 29.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-16 (Memory Protection) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates the CVE by requiring timely identification, reporting, and correction of the heap-based buffer overflow flaw in RRAS through vendor patching.
Employs memory protection mechanisms like ASLR, stack canaries, and DEP that directly thwart exploitation of heap-based buffer overflows leading to arbitrary code execution.
Monitors and controls network communications at boundaries to block unauthorized remote access attempts targeting the vulnerable RRAS service.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap buffer overflow enables remote arbitrary code execution in the network-exposed RRAS service without authentication, directly mapping to exploitation of public-facing apps and remote services.
NVD Description
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Deeper analysisAI
CVE-2025-49669 is a heap-based buffer overflow vulnerability, classified under CWE-122, affecting the Windows Routing and Remote Access Service (RRAS). Published on 2025-07-08, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), indicating high severity due to its potential for significant impact across confidentiality, integrity, and availability.
An unauthorized attacker can exploit this vulnerability remotely over a network with low complexity and no required privileges, though it necessitates user interaction. Successful exploitation allows arbitrary code execution on the targeted system.
The Microsoft Security Response Center provides guidance on this vulnerability, including mitigation and patch details, at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49669.
Details
- CWE(s)