CVE-2021-38636
vulnerability analysis and mitigation

Overview

Windows Redirected Drive Buffering SubSystem Driver Information Disclosure Vulnerability (CVE-2021-38636) was identified and disclosed in September 2021. This vulnerability affects various versions of Microsoft Windows operating systems, including Windows 10 (versions 1607, 1809, 1909, 2004, 20H2, 21H1), Windows 7 SP1, and Windows 8.1 (NVD).

Technical details

The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. Under CVSS v2.0, it received a base score of 2.1 (Low) with the vector string (AV:L/AC:L/Au:N/C:P/I:N/A:N). The vulnerability specifically relates to information disclosure in the Windows Redirected Drive Buffering SubSystem Driver (NVD).

Impact

This vulnerability could lead to information disclosure if successfully exploited. The CVSS scoring indicates that while the vulnerability requires local access and low privileges, it could potentially result in high confidentiality impact (NVD).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability. Users are advised to apply the appropriate patches through Windows Update or Microsoft's security guidance (Microsoft Advisory).

Additional resources


SourceThis report was generated using AI

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management