Information disclosure in Microsoft Rich Text Edit Control



Published: 2021-10-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-40454
CWE-ID CWE-200
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Microsoft Office
Client/Desktop applications / Office applications

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU57300

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-40454

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Rich Text Edit Control. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 8.1 - 11 21H2

Windows Server: 2012 - 2019 2004

Microsoft Office: 2013 - 2019 for Mac


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40454

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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