PT-2025-42126 · Microsoft · Office Excel

Published 2025-10-14 · Updated 2025-12-14 · CVE-2025-59243

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 use after free condition exists in Microsoft Office Excel, potentially allowing an unauthorized attacker to execute code locally.

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

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-13014

CVE-2025-59243

Affected Products

Office Excel

References · 7

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59243 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-13014 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-59243 · Security Note
• https://osv.dev/vulnerability/CVE-2025-59243 · Vendor Advisory
• https://t.me/cveNotify/139077 · Telegram Post
• https://twitter.com/CVEnew/status/1978198242182508925 · Twitter Post
• https://twitter.com/ArjunGU2/status/1983473843676291260 · Twitter Post