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CVE-2019-1064

Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability

Microsoft WindowsOperating systems
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationExploited in the wildAdded to KEV 15 Mar 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)6.89%Chance of exploitation activity in the next 30 days, higher than 94% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline5 Apr 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 12 Jun 2019, 13:49 UTCPublishedCVE List
  2. 15 Mar 2022Added to CISA KEVCISA KEV

Description

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

Text from CVE List

Affected versions 16

  • Windows 10 Version 1703affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1803affected: 10.0.0 before publicationCVE List
  • Windows Server, version 1803 (Server Core Installation)affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1809affected: 10.0.17763.0 before publicationCVE List
  • Windows 10 Version 1809affected: 10.0.0 before publicationCVE List
  • Windows Server 2019affected: 10.0.17763.0 before publicationCVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before publicationCVE List
  • Windows 10 Version 1709 for 32-bit Systemsaffected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1709affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1903 for 32-bit Systemsaffected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1903 for x64-based Systemsaffected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1903 for ARM64-based Systemsaffected: 10.0.0 before publicationCVE List
  • Windows Server, version 1903 (Server Core installation)affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1607affected: 10.0.14393.0 before publicationCVE List
  • Windows Server 2016affected: 10.0.14393.0 before publicationCVE List
  • Windows Server 2016 (Server Core installation)affected: 10.0.14393.0 before publicationCVE List

References 4