PT-2025-42116 · Microsoft · Office Excel

Published 2025-10-14 · Updated 2025-12-11 · CVE-2025-59231

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel (affected versions not specified)

Description A type confusion issue in Microsoft Office Excel allows unauthorized code execution locally. Exploitation involves accessing a resource using an incompatible type. This can lead to remote code execution (RCE) when a malicious Excel file is opened, enabling an attacker to execute arbitrary code on the affected system with user interaction.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Type Confusion

Weakness Enumeration

CWE-843

Related Identifiers

BDU:2025-13012

CVE-2025-59231

Affected Products

Office Excel

References · 8

• https://bdu.fstec.ru/vul/2025-13012 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-59231 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/725738 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59231 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-59231 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-59231 · Security Note
• https://twitter.com/CVEnew/status/1978198249891615045 · Twitter Post
• https://twitter.com/CveTodo/status/1978153375800664080 · Twitter Post