CVE-2021-40455 — MEDIUM (5.5)

Vulnerability Description

Windows Installer Spoofing Vulnerability

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Windows 10	-
Microsoft	Windows 11	-
Microsoft	Windows 7	-
Microsoft	Windows 8.1	-
Microsoft	Windows Rt 8.1	-
Microsoft	Windows Server	20h2
Microsoft	Windows Server 2008	-
Microsoft	Windows Server 2012	-
Microsoft	Windows Server 2016	-
Microsoft	Windows Server 2019	-
Microsoft	Windows Server 2022	All versions

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4045PatchVendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4045PatchVendor Advisory

FAQ

What is CVE-2021-40455?

CVE-2021-40455 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Windows Installer Spoofing Vulnerability

How severe is CVE-2021-40455?

CVE-2021-40455 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-40455?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1.