CVE-2019-0543

CVE-2019-0543 is a high-severity (CVSS 7.8) vulnerability in Microsoft Windows. CISA added it to the Known Exploited Vulnerabilities catalog on March 15, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 5, 2022. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

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.

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

• http://www.securityfocus.com/bid/106408
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0543
• https://www.exploit-db.com/exploits/46156/
• http://www.securityfocus.com/bid/106408
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0543
• https://www.exploit-db.com/exploits/46156/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0543