CVE-2021-36942

CVE Enrichment

CVSS: 7.5 HIGH
EPSS: 66.02%
EPSS Percentile: 99.26%
CISA KEV: YES — Known Exploited Vulnerability

Description

Windows LSA Spoofing Vulnerability

Technical Details

CVSS Version: 3.1
CNA / NVD Source: secure@microsoft.com
Published: 13-Aug-2021 01:15
Last Modified: 11-Aug-2026 03:19
EPSS Date: 2026-10-13

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:N /
                            A:N

CISA KEV Details

Date Added: 2021-11-03
Remediation Due: 2021-11-17
Known Ransomware Campaign Use: Known
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-36942

Affected Products / Versions

microsoft / windows_server_2004
Version / affected range: * · before (exclusive) 10.0.19041.1165
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
microsoft / windows_server_2008
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
microsoft / windows_server_2008
Version / affected range: r2
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
microsoft / windows_server_2012
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
microsoft / windows_server_2012
Version / affected range: r2
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
microsoft / windows_server_2016
Version / affected range: * · before (exclusive) 10.0.14393.4583
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
microsoft / windows_server_2019
Version / affected range: * · before (exclusive) 10.0.17763.2114
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
microsoft / windows_server_20h2
Version / affected range: * · before (exclusive) 10.0.19042.1165
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*

References

Last enrichment sync: 13-Oct-2026 22:30
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

that attempts to escalate the process privileges using a vulnerability in the Encrypted File System (CVE-2021-36942). Tortilla Campaign Exploits Exchange Servers to Deploy Babuk Ransomware

Malware (5)

People (4)

Threat Actors (1)

MITRE ATT&CK (8)

Vendors (2)

Products (7)

Tools (8)

Countries (9)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.