2021-34493 | Microsoft Windows Partition Management Driver Privilege Escalation
|CVSS Meta Temp Score
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|CTI Interest Score
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A vulnerability classified as critical has been found in Microsoft Windows 10 20H2 up to Server 2019 (Operating System). This affects an unknown part of the component Partition Management Driver. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
Windows Partition Management Driver Elevation of Privilege Vulnerability
The weakness was disclosed 07/13/2021 as confirmed security guidance (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2021-34493 since 06/09/2021. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/17/2021).
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.1
Vendor Base Score (Microsoft): 6.7
Vendor Vector (Microsoft): 🔒
06/09/2021 CVE assigned
07/13/2021 +34 days Advisory disclosed
07/13/2021 +0 days Countermeasure disclosed
07/14/2021 +0 days VulDB entry created
07/17/2021 +3 days VulDB last updateVendor: https://www.microsoft.com/
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