Is CVE-2019-0543 in the CISA KEV catalog?

Yes. CVE-2019-0543 is on the CISA Known Exploited Vulnerabilities list, added 2022-03-15, and has known ransomware campaign use.

What is the CVSS severity of CVE-2019-0543?

CVE-2019-0543 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2019-0543?

CVE-2019-0543 has an EPSS score of 4.72% (91th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2019-0543

HIGHCISA KEVEPSS 91th pctl

7.8

CVSS v3

NVD

Description

An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka "Microsoft Windows Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

CWE-287Improper Authentication

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

4.72%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Windows Privilege Escalation Vulnerability

A privilege escalation vulnerability exists when Windows improperly handles authentication requests. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

Apply updates per vendor instructions.

Remediation due: 2022-04-05

Associated with ransomware campaigns

References

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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 2026-01-14.