1. Home
  2. Vulnerabilities
  3. CVE-2025-59221
7.0
HIGH CVSS 3.1
CVE-2025-59221
Microsoft Word Remote Code Execution Vulnerability
Overview
Description

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Details
INFO

Published Date :

Oct. 14, 2025, 5:16 p.m.

Last Modified :

June 17, 2026, 9:45 a.m.

Remotely Exploit :

No

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2025-59221 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft office
2 Microsoft word
3 Microsoft sharepoint_server
4 Microsoft 365_apps
5 Microsoft office_long_term_servicing_channel
6 Microsoft office_macos_2024
7 Microsoft office_macos_2021
8 Microsoft sharepoint_server_2016
9 Microsoft word_2016
10 Microsoft sharepoint_server_2019
11 Microsoft office_2024
12 Microsoft office_2021
13 Microsoft office_2019
: Total Affected Vendor : 1 | Products : 13
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 HIGH f38d906d-7342-40ea-92c1-6c4a2c6478c8
CVSS 3.1 HIGH [email protected]
Solution
Update Microsoft Office to patch a use-after-free vulnerability.
  • Install the latest Microsoft Office security updates.
  • Apply relevant Microsoft Knowledge Base updates.
  • Restart affected systems if required.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-59221.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59221 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-59221 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-59221 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-59221 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-59221 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Jun. 17, 2026

    Action Type Old Value New Value
    Added Affected [{'vendor': 'Microsoft', 'product': 'Microsoft 365 Apps for Enterprise', 'versions': [{'status': 'affected', 'version': '16.0.1', 'lessThan': 'https://aka.ms/OfficeSecurityReleases', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Office 2019', 'versions': [{'status': 'affected', 'version': '19.0.0', 'lessThan': 'https://aka.ms/OfficeSecurityReleases', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Office LTSC 2021', 'versions': [{'status': 'affected', 'version': '16.0.1', 'lessThan': 'https://aka.ms/OfficeSecurityReleases', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Office LTSC 2024', 'versions': [{'status': 'affected', 'version': '16.0.0', 'lessThan': 'https://aka.ms/OfficeSecurityReleases', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Office LTSC for Mac 2021', 'versions': [{'status': 'affected', 'version': '16.0.1', 'lessThan': '16.102.25101223', 'versionType': 'custom'}]}, {'vendor': 'Microsoft', 'product': 'Microsoft Office LTSC for Mac 2024', 'versions': [{'status': 'affected', 'version': '16.0.0', 'lessThan': '16.102.25101223', 'versionType': 'custom'}]}, {'vendor': 'Microsoft', 'product': 'Microsoft SharePoint Enterprise Server 2016', 'versions': [{'status': 'affected', 'version': '16.0.0', 'lessThan': '16.0.5522.1000', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft SharePoint Server 2019', 'versions': [{'status': 'affected', 'version': '16.0.0', 'lessThan': '16.0.10417.20059', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Word 2016', 'versions': [{'status': 'affected', 'version': '16.0.1', 'lessThan': '16.0.5522.1000', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}]
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jun. 17, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2025-59221', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2025-10-15T03:55:54.175161Z'}
  • Initial Analysis by [email protected]

    Oct. 16, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* *cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:* *cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* *cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:* *cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:* *cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:* *cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x64:* *cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x86:* *cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:* *cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:* *cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:* *cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:* *cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:* *cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:*
    Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59221 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Oct. 14, 2025

    Action Type Old Value New Value
    Added Description Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
    Added CVSS V3.1 AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-416
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59221
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact