CVE-2025-24056
Published: 11 March 2025
Summary
CVE-2025-24056 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 Exploitation for Client Execution (T1203); ranked in the top 46.8% 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-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates the heap-based buffer overflow by requiring timely remediation through patching as recommended in Microsoft's update guide.
Implements memory protection mechanisms such as heap isolation and guard pages that prevent exploitation of heap-based buffer overflows leading to arbitrary code execution.
Validates network inputs to the Windows Telephony Server to ensure they do not exceed buffer boundaries, directly countering the buffer overflow vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap buffer overflow in Windows Telephony Server enables RCE via malicious link or crafted file (user interaction), directly mapping to client exploitation and arbitrary command/script execution.
NVD Description
Heap-based buffer overflow in Windows Telephony Server allows an unauthorized attacker to execute code over a network.
Deeper analysisAI
CVE-2025-24056 is a heap-based buffer overflow vulnerability (CWE-122) in the Windows Telephony Server component of Microsoft Windows. Published on March 11, 2025, it has a CVSS v3.1 base score of 8.8, reflecting its high severity due to network accessibility, low attack complexity, and potential for significant impact.
An unauthorized attacker can exploit this vulnerability over a network without requiring privileges (AV:N/AC:L/PR:N), though it necessitates user interaction (UI:R), such as clicking a malicious link or opening a crafted file. Successful exploitation allows arbitrary code execution with high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), potentially leading to full system compromise in the context of the affected server process.
Microsoft's update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24056 provides details on patches and recommended mitigations for addressing this vulnerability.
Details
- CWE(s)