CVE-2021-31199

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.030 · 87 %ileEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

2.95% (87th) EPSS

CVSS 4.6 · medium

Is it mine?

69 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

added 2021-11-03remediate by 2021-11-17

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability

Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:P/E:Hsecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.15.2mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:F/RL:O/RC:Csecondary · ENISA EU

v3.15.2mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Nsecondary · secure@microsoft.com USexploitability 2 · impact 2.7

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269US

affected products (69)

Products and version ranges known to be affected.

Microsoft Windows 10 Version 150710.0.0 → 10.0.10240.18967enisa_euvdEU
Microsoft Windows 10 Version 160710.0.0 → 10.0.14393.4467enisa_euvdEU
Microsoft Windows 10 Version 180910.0.0 → 10.0.17763.1999enisa_euvdEU
Microsoft Windows 10 Version 190910.0.0 → 10.0.18363.1621enisa_euvdEU
Microsoft Windows 10 Version 200410.0.0 → 10.0.19041.1052enisa_euvdEU
Microsoft Windows 10 Version 20H210.0.0 → 10.0.19042.1052enisa_euvdEU
Microsoft Windows 10 Version 21H110.0.0 → 10.0.19043.1052enisa_euvdEU
Microsoft Windows 76.1.0 → 6.1.7601.25632enisa_euvdEU
Microsoft Windows 7 Service Pack 16.1.0 → 6.1.7601.25632enisa_euvdEU
Microsoft Windows 8.16.3.0 → 6.3.9600.20044enisa_euvdEU
Microsoft Windows 8.16.3.0 → 6.3.9600.20045enisa_euvdEU
Microsoft Windows Server 2008 R2 Service Pack 16.1.0 → 6.1.7601.25632enisa_euvdEU
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)6.0.0 → 6.1.7601.25632enisa_euvdEU
Microsoft Windows Server 2008 Service Pack 26.0.0 → 6.0.6003.21137enisa_euvdEU
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)6.0.0 → 6.0.6003.21137enisa_euvdEU
Microsoft Windows Server 20126.2.0 → 6.2.9200.23372enisa_euvdEU
Microsoft Windows Server 2012 (Server Core installation)6.2.0 → 6.2.9200.23372enisa_euvdEU
Microsoft Windows Server 2012 R26.3.0 → 6.3.9600.20044enisa_euvdEU
Microsoft Windows Server 2012 R26.3.0 → 6.3.9600.20045enisa_euvdEU
Microsoft Windows Server 2012 R2 (Server Core installation)6.3.0 → 6.3.9600.20044enisa_euvdEU

showing 20 of 69

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2021-06-08modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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