Is CVE-2021-41357 in the CISA KEV catalog?

Yes. CVE-2021-41357 is on the CISA Known Exploited Vulnerabilities list, added 2022-04-25.

What is the CVSS severity of CVE-2021-41357?

CVE-2021-41357 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-41357?

CVE-2021-41357 has an EPSS score of 1.97% (78th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2021-41357

HIGHCISA KEVEPSS 78th pctl

7.8

CVSS v3

NVD

Description

Win32k Elevation of Privilege Vulnerability

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.97%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32k contains an unspecified vulnerability that allows for privilege escalation.

Apply updates per vendor instructions.

Remediation due: 2022-05-16

References

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-30.