CVE-2025-49729
Published: 08 July 2025
Summary
CVE-2025-49729 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
Requires timely remediation of the specific heap-based buffer overflow vulnerability in RRAS through application of vendor patches from the Microsoft advisory.
Implements memory protection mechanisms such as DEP and ASLR that directly mitigate exploitation of heap buffer overflows for remote code execution.
Reduces exposure by prohibiting or restricting unnecessary RRAS functionality and ports/protocols consistent with least functionality requirements.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap buffer overflow in exposed RRAS service directly enables remote arbitrary code execution against a remote service or public-facing application.
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-2025-49729 is a heap-based buffer overflow vulnerability, classified under CWE-122, affecting the Windows Routing and Remote Access Service (RRAS). Published on 2025-07-08T17:16:01.190, 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 allows the attacker to execute arbitrary code remotely on the targeted system.
The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49729 provides details on patches and mitigation recommendations for addressing this issue.
Details
- CWE(s)