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CVE-2019-0543

HIGH

7.8

CVSS Score

Published: January 8, 2019 at 09:00 PM UTC

Updated: June 17, 2026 at 02:08 AM UTC

15 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012

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Severity

HIGH7.8

Exploitation

CISA KEV

Exploit prediction

EPSS 5%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score4.7%

EPSS (Exploit Prediction Scoring System) estimates a 4.7% chance this CVE is exploited in the wild within the next 30 days — higher than 92% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.

Required Action

Apply updates per vendor instructions.

Ransomware Use

Known

Added to KEV

Mar 15, 2022

Remediation Due

Apr 5, 2022

1665 days overdue

Notes

https://nvd.nist.gov/vuln/detail/CVE-2019-0543

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 10 1507 · Microsoft

95%

All versions

Windows 10 1607 · Microsoft

95%

All versions

Windows 10 1703 · Microsoft

95%

All versions

Windows 10 1709 · Microsoft

95%

All versions

Windows 10 1803 · Microsoft

95%

All versions

Windows 10 1809 · Microsoft

95%

All versions

Windows 7 · Microsoft

95%

sp1

Windows 8-1 · Microsoft

95%

All versions

Windows Rt 8-1 · Microsoft

95%

All versions

Windows Server 1709 · Microsoft

95%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0543

References (4)

VDB Entryx_refsource_BIDBroken LinkThird Party Advisory

Source: [email protected]

http://www.securityfocus.com/bid/106408

x_refsource_CONFIRMPatchVendor Advisory

Source: [email protected]

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0543

Exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry

Source: [email protected]

https://www.exploit-db.com/exploits/46156/

US Government Resource

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0543

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-287

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