Cross-Site Scripting in Office OOBE Enables Network Spoofing

Publication date: 2025-12-18

Last updated on: 2025-12-18

Assigner: Microsoft Corporation

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Office Out-of-Box Experience allows an unauthorized attacker to perform spoofing over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-12-18

Last Modified

2025-12-18

Generated

2026-07-06

AI Q&A

2025-12-19

EPSS Evaluated

2026-07-05

NVD

CVE-2025-64677

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	office	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a cross-site scripting (XSS) issue in the Office Out-of-Box Experience. It occurs because input is not properly neutralized during web page generation, allowing an unauthorized attacker to perform spoofing attacks over a network.

Impact Analysis

An attacker exploiting this vulnerability can perform spoofing attacks, potentially deceiving users or systems by injecting malicious scripts. This can lead to unauthorized actions or information disclosure, impacting confidentiality and integrity.

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