CVE-2021-40463 — HIGH (7.7)

Vulnerability Description

Windows Network Address Translation (NAT) Denial of Service Vulnerability

CVSS Score

7.7

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Microsoft	Windows 10	-
Microsoft	Windows 11 21H2	All versions
Microsoft	Windows 8.1	-
Microsoft	Windows Rt 8.1	-
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-2021-4046PatchVendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4046PatchVendor Advisory

FAQ

What is CVE-2021-40463?

CVE-2021-40463 is a vulnerability with a CVSS score of 7.7 (HIGH). Windows Network Address Translation (NAT) Denial of Service Vulnerability

How severe is CVE-2021-40463?

CVE-2021-40463 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-40463?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10, Microsoft Windows 11 21H2, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2012.