CVE-2021-24077: 
vulnerability analysis and mitigation

CVE-2021-24077 is a Windows Fax Service Remote Code Execution Vulnerability that was identified and disclosed in early 2021. The vulnerability affects multiple versions of Microsoft Windows operating systems, including Windows 10, Windows Server 2016, Windows Server 2019, and earlier versions (Rapid7).

The vulnerability has been assigned a CVSS v3.1 base score indicating high severity with the following vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. The CVSS v2 score is (AV:N/AC:L/Au:N/C:P/I:P/A:P) with a severity rating of 8.0 (NVD).

This vulnerability could allow remote code execution if successfully exploited, potentially enabling an attacker to execute arbitrary code with elevated privileges on affected systems (MITRE).

The vulnerability is characterized by network accessibility (AV:N) with low attack complexity (AC:L) and requires no privileges (PR:N) or user interaction (UI:N) to exploit, making it particularly concerning from a security perspective (NVD).

Microsoft has released security updates to address this vulnerability across multiple affected versions of Windows. The fixes are available through various KB updates including KB4601315, KB4601318, KB4601319, KB4601331, KB4601345, KB4601349, KB4601354, and KB4601357 (Rapid7).