Remote code execution in Microsoft Word

1) Input validation error

EUVDB-ID: #VU80695

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-36762

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Word. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Word: before 16.0.5413.1000

Microsoft SharePoint Enterprise Server: before 16.0.5413.1000

Microsoft Office LTSC: before 16.77.23091003

Microsoft Office: before 16.0.5413.1000

Microsoft 365 Apps for Enterprise: before 16.0.5413.1000

CPE2.3

• cpe:2.3:a:microsoft:microsoft_word:*:*:*:*:*:microsoft_office:*:*
• cpe:2.3:a:microsoft:microsoft_sharepoint_enterprise_server:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_office_ltsc:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_365_apps_for_enterprise:*:*:*:*:*:*:*:*

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36762

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.