CVE-2019-1253

HIGH7.8

CISA KEV

Published 2019-09-11 · Updated 2026-06-17 · Source secure@microsoft.com

Summary

CVE-2019-1253 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.

All 390 known-exploited Microsoft vulnerabilities →

Description

An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1215, CVE-2019-1278, CVE-2019-1303.

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

CWE-59

CISA Known-Exploited Vulnerability

Product: Microsoft — Windows

Name: Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerability

Date added: 2022-03-15 · Due: 2022-04-05

USED IN RANSOMWARE

Required action: Apply updates per vendor instructions.

References

View on NVD

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