⚠ Actively exploited
Added to CISA KEV on 2021-11-03. Federal agencies required to patch by 2021-11-17. Required action: Apply updates per vendor instructions..

CVE-2021-31199

CWE-269 — Improper Privilege Management8 documents7 sources
Severity
7.8HIGH
EPSS
0.8%
top 25.99%
CISA KEV
KEV
Added 2021-11-03
Due 2021-11-17
Exploit
Exploited in wild
Active exploitation observed
Affected products
34
Microsoft Windows 10 Version 1507Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809+31 more
Timeline
PublishedJun 8
KEV addedNov 3
KEV dueNov 17
Latest updateMay 24
CISA Required Action: Apply updates per vendor instructions.

Description

Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NExploitability: 2.0 | Impact: 2.7

Affected Packages32 packages

▶NVDmicrosoft/windows< 10.0.19041.1052+4
▶CVEListV5microsoft/windows_76.1.0 — 6.1.7601.25632
▶CVEListV5microsoft/windows_8.16.3.0 — 6.3.9600.20045+1
▶NVDmicrosoft/windows_10_1507< 10.0.10240.18967
▶NVDmicrosoft/windows_10_1607< 10.0.14393.4467

Patches

Patch: portal.msrc.microsoft.com ↗Patch: portal.msrc.microsoft.com ↗

🔴Vulnerability Details

4
GHSA
GHSA-j8p4-6frh-8hrj: Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-31201↗2022-05-24
▶
Project0
The More You Know, The More You Know You Don’t Know - Project Zero↗2022-04-01
▶
CVEList
Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability↗2021-06-08
▶
VulnCheck
Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability↗2021
▶

📋Vendor Advisories

2
CISA
Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability↗2021-11-03
▶
Microsoft
Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability↗2021-06-08
▶
CVE-2021-31199 (HIGH CVSS 7.8) | Microsoft Enhanced Cryptographic Pr | cvebase.io