CVE-2023-36761: Microsoft Word Information Disclosure Vulnerability

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

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

Category

Information Disclosure

Exploit Status

Actively Exploited

Exploitation Likelihood

Detected

Publicly Disclosed

Yes

Patch Tuesday

2023-Sep

Released

2023-09-12

Last Updated

2023-10-17

EPSS Score

7.33% (percentile: 91.7%)

CISA KEV

Listed — due 2023-10-03

FAQ

What type of information could be disclosed by this vulnerability? Exploiting this vulnerability could allow the disclosure of NTLM hashes. Is the Preview Pane an attack vector for this vulnerability? Yes, the Preview Pane is an attack vector. According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? A user needs to be tricked into running malicious files.

Affected Products (11)

Microsoft Office

• Microsoft Office 2019 for 32-bit editions
• Microsoft Office 2019 for 64-bit editions
• Microsoft 365 Apps for Enterprise for 32-bit Systems
• Microsoft 365 Apps for Enterprise for 64-bit Systems
• Microsoft Office LTSC 2021 for 64-bit editions
• Microsoft Office LTSC 2021 for 32-bit editions
• Microsoft Word 2016 (32-bit edition)
• Microsoft Word 2016 (64-bit edition)
• Microsoft Word 2013 RT Service Pack 1
• Microsoft Word 2013 Service Pack 1 (32-bit editions)
• Microsoft Word 2013 Service Pack 1 (64-bit editions)

Security Updates (4)

• 5002497
• 5002497
• 5002483
• 5002483

Acknowledgments

Microsoft Threat Intelligence

Revision History

• 2023-09-12: Information published.
• 2023-10-17: Updated one or more CVSS scores for the affected products and added an FAQ explaining the vector string settings. This is an informational change only.