Information disclosure in Microsoft products - CVE-2021-28456
Published: April 13, 2021
Vulnerability identifier: #VU52112
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-28456
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file or visit a malicious website and gain unauthorized access to sensitive information on the system.
Affected software
Microsoft Excel
Microsoft Office
Microsoft Office Web Apps Server
Office Online Server
Microsoft Office
Microsoft Office Web Apps Server
Office Online Server
How to mitigate CVE-2021-28456
Install updates from vendor's website.