PT-2025-42121 · Microsoft · Office Excel

Published 2025-10-14 · Updated 2025-12-05 · CVE-2025-59236

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

AV:L/AC:L/PR:N/UI:N/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. This occurs when a program attempts to use memory after it has been freed, potentially leading to arbitrary code execution. An attacker can exploit this to execute malicious code locally on a vulnerable system.

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

LPE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-13013

CVE-2025-59236

Affected Products

Office Excel

References · 9

• https://bdu.fstec.ru/vul/2025-13013 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-59236 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59236 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-59236 · Vendor Advisory
• https://t.me/cveNotify/140761 · Telegram Post
• https://twitter.com/PurpleOps_io/status/1983081704500695121 · Twitter Post
• https://twitter.com/CveTodo/status/1978164413472354397 · Twitter Post
• https://twitter.com/CVEnew/status/1978198246087364630 · Twitter Post
• https://roboshadow.com/blog/patch-tuesday-october-2025 · Reddit Post