CVE-2025-49668
Published: 08 July 2025
Summary
CVE-2025-49668 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 remediates the heap-based buffer overflow in RRAS by requiring timely application of vendor patches as advised by MSRC.
Implements memory protection mechanisms like ASLR and DEP to prevent exploitation of heap buffer overflows for arbitrary code execution.
Enforces validation of network inputs to RRAS to mitigate malformed data triggering the buffer overflow.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap buffer overflow in exposed RRAS service directly enables remote arbitrary code execution without authentication.
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-2025-49668 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.
An unauthorized attacker can exploit this vulnerability over the network with low attack complexity and no required privileges, though user interaction is necessary. Successful exploitation enables arbitrary code execution on the target system.
The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49668 provides guidance on patches and mitigations for this vulnerability.
Details
- CWE(s)