CVE-2025-64677

High

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.

SeverityHigh

CVSS8.2

Exploit probability—

Product

Microsoft Office Out-of-box Experience

PublishedDec 18, 2025

First seenDec 18, 2025

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Patches

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64677

Affected products

Product	Affected versions	Fixed in
microsoft office_out-of-box_experience	No range specified	—

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