CVE-2025-24057
Published: 11 March 2025
Summary
CVE-2025-24057 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Microsoft Office Long Term Servicing Channel. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 44.3th percentile by exploit likelihood (below the median); 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 organizations to identify, report, and correct flaws like this heap-based buffer overflow in Microsoft Office through timely patching as referenced in the MSRC advisory.
Implements memory protection mechanisms such as ASLR and DEP to prevent unauthorized code execution from heap-based buffer overflows in vulnerable applications like Microsoft Office.
Mandates validation of information inputs to detect and reject malformed Office file data that could trigger the buffer overflow vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap-based buffer overflow in Microsoft Office enables arbitrary code execution when a user opens a specially crafted malicious file, directly mapping to client-side exploitation (T1203) and user execution via malicious file (T1204.002).
NVD Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Deeper analysisAI
CVE-2025-24057 is a heap-based buffer overflow vulnerability (CWE-122) affecting Microsoft Office. Published on 2025-03-11T17:16:28.390, it carries a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The issue enables an unauthorized attacker to execute code locally via malformed input processed by the software.
Exploitation requires local access to the target system with low attack complexity and no privileges, but user interaction is necessary, such as opening a specially crafted Office file. A successful attack grants the attacker arbitrary code execution on the local machine, resulting in high impacts to confidentiality, integrity, and availability.
The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24057 provides details on mitigation and available patches.
Details
- CWE(s)