CVE-2021-41356 Explained : Impact and Mitigation
Learn about CVE-2021-41356, a high-severity denial of service vulnerability in multiple Microsoft Windows versions. Find out affected systems, impact, and mitigation steps.
A denial of service vulnerability impacting various Microsoft Windows versions has been identified and disclosed by Microsoft.
Understanding CVE-2021-41356
This CVE covers a denial of service vulnerability affecting multiple versions of Microsoft Windows.
What is CVE-2021-41356?
The CVE-2021-41356 vulnerability involves a denial of service issue in different Microsoft Windows platforms, potentially leading to service disruption or unavailability.
The Impact of CVE-2021-41356
The impact of this vulnerability is rated as HIGH based on the CVSS v3.1 score of 7.5, signifying a significant risk to affected systems.
Technical Details of CVE-2021-41356
The technical aspects of CVE-2021-41356 are detailed below:
Vulnerability Description
- Type: Denial of Service
- Severity: High (CVSS Base Score: 7.5)
- Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Affected Systems and Versions
- Windows 10 Version 1809
- Windows Server 2019
- Windows Server 2019 (Server Core installation)
- Windows 10 Version 1909
- Windows 10 Version 21H1
- Windows Server 2022
- Windows 10 Version 2004
- Windows Server version 2004
- Windows 10 Version 20H2
- Windows Server version 20H2
- Windows 11 version 21H2
- Windows 10 Version 1507
- Windows 10 Version 1607
- Windows Server 2016
- Windows Server 2016 (Server Core installation)
Exploitation Mechanism
The vulnerability can be exploited remotely without authentication, making it imperative to apply necessary patches to mitigate the risk.
Mitigation and Prevention
Effective mitigation strategies for addressing CVE-2021-41356 include:
Immediate Steps to Take
- Apply the latest security updates and patches provided by Microsoft.
- Monitor security advisories from Microsoft for any additional guidance.
- Implement network-based access control lists to restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch all Windows systems to safeguard against known vulnerabilities.
- Employ network segmentation to limit the impact of potential security breaches.
- Utilize intrusion detection systems to identify and respond to suspicious activities.
Patching and Updates
- Install the security updates released by Microsoft for the affected Windows versions.
- Prioritize timely deployment of patches to enhance system security and resilience.