CVE-2025-30381: 
vulnerability analysis and mitigation

CVE-2025-30381 is a security vulnerability discovered in Microsoft Office Excel that was disclosed on May 13, 2025. The vulnerability is characterized as an out-of-bounds read condition that allows an unauthorized attacker to execute code locally on affected systems. The vulnerability affects multiple versions of Microsoft products including Microsoft Excel 2016, Office 2019, Microsoft 365 Apps Enterprise, and various versions of Office Long Term Servicing Channel (NVD).

The vulnerability is classified as an out-of-bounds read (CWE-125) and untrusted pointer dereference (CWE-822) issue. Microsoft has assigned it a CVSS v3.1 base score of 7.8 (High), with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. This scoring indicates that the vulnerability requires local access and user interaction, but no privileges, while potentially impacting confidentiality, integrity, and availability at high levels (NVD).

The vulnerability can lead to local code execution on affected systems, potentially allowing attackers to gain significant control over the compromised system. The high CVSS score of 7.8 indicates serious potential impacts on system confidentiality, integrity, and availability (NVD).