Microsoft Office Spoofing Vulnerability

Source data

Overview

Insufficiently protected credentials in Microsoft Office allows an unauthorized attacker to perform spoofing over a network.

Impact & technical details

Spoofing

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? A user interacting with the file in multiple ways will cause the NTLM hash to be leaked. A few interactions which trigger this leak include: Opening the parent folder in Explorer Clicking the file (any mouse button) Dragging the file Deleting the file

CVSS base score

6.5 / 10

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.

Affected products

• Microsoft 365 Apps for Enterprise for 32-bit Systems
• Microsoft 365 Apps for Enterprise for 64-bit Systems
• Microsoft Office 2016 (32-bit edition)
• Microsoft Office 2016 (64-bit edition)
• Microsoft Office 2019 for 32-bit editions
• Microsoft Office 2019 for 64-bit editions
• Microsoft Office LTSC 2021 for 32-bit editions
• Microsoft Office LTSC 2021 for 64-bit editions

Source guidance

Remediation

• Click to Run
• Release Notes

Patch availability is not confirmed by this dataset. Consult the vendor before selecting a remediation.

Authoritative sources & updates

Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.

• Microsoft Security Response Center (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)