CVE-2025-59295
Published: 14 October 2025
Summary
CVE-2025-59295 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 39.3% 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 patching and remediation of known flaws like this heap-based buffer overflow in Internet Explorer to prevent exploitation.
Implements memory protections such as ASLR and DEP to directly mitigate heap-based buffer overflow exploits leading to arbitrary code execution.
Deploys malicious code defenses to block or detect exploit payloads targeting this Internet Explorer buffer overflow vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap-based buffer overflow in Internet Explorer enables arbitrary code execution over the network with user interaction and no privileges, directly facilitating Exploitation for Client Execution (T1203).
NVD Description
Heap-based buffer overflow in Internet Explorer allows an unauthorized attacker to execute code over a network.
Deeper analysisAI
CVE-2025-59295 is a heap-based buffer overflow vulnerability, classified under CWE-122, affecting Internet Explorer. Published on 2025-10-14T17:16:12.850, 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 a network with low complexity and no required privileges, though it necessitates user interaction. Successful exploitation enables arbitrary code execution, compromising confidentiality, integrity, and availability at a high level.
The Microsoft Security Response Center provides guidance on this vulnerability, including patches and mitigation details, at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59295.
Details
- CWE(s)