Microsoft Windows up to Server 2019 Enhanced Cryptographic Provider

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0$5k-$25k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been rated as critical. This issue affects some unknown processing of the component Enhanced Cryptographic Provider. The manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2021-31201. The attack is possible to be carried out remotely. Moreover, an exploit is present. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) and classified as critical. This issue affects an unknown function of the component Enhanced Cryptographic Provider. Impacted is confidentiality, and integrity. The summary by CVE is:

Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability

The weakness was disclosed 06/08/2021 as confirmed security guidance (Website). The advisory is shared at portal.msrc.microsoft.com. The identification of this vulnerability is CVE-2021-31201. Technical details are unknown but an exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/30/2025).

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 11/03/2021 with a due date of 11/17/2021:

Apply updates per vendor instructions.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Zero-Day.cz (640) and EUVD (EUVD-2021-18114). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.4
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 5.2
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 5.2
CNA Vector (Microsoft): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Unknown
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

04/14/2021 🔍
06/08/2021 +55 days 🔍
06/08/2021 +0 days 🔍
06/09/2021 +0 days 🔍
10/30/2025 +1604 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed

CVE: CVE-2021-31201 (🔍)
GCVE (CVE): GCVE-0-2021-31201
GCVE (VulDB): GCVE-100-176477
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 06/09/2021 06:11
Updated: 10/30/2025 21:18
Changes: 06/09/2021 06:11 (33), 06/09/2021 06:15 (22), 06/10/2021 18:14 (2), 04/21/2024 18:59 (28), 06/27/2024 06:58 (2), 07/29/2024 22:36 (28), 09/15/2024 13:07 (1), 07/29/2025 03:23 (1), 10/30/2025 21:18 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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