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ExploitedIn CISA KEVFix available

CVE-2019-1064

Exploitation confirmed. First attested on 2022-03-15 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2019-06-12
  • WeaknessCWE-59

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how Windows AppX Deployment Service handles hard links.

Timeline

dates in UTC
  1. 2019-06-1214:29CVE publishedNVD
  2. 2022-03-15Added to the CISA KEV catalogCISA KEV
  3. 2022-03-15Listed as exploited by GCVEGCVE
  4. 2022-03-15Exploitation first reportedCISA KEV
  5. 2025-02-0716:16SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-04 03:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-1064?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-1064?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Microsoft windows 10 1607
BranchAffectedFixed in
—all versionsno fix published
Microsoft windows 10 1703
BranchAffectedFixed in
—all versionsno fix published
Microsoft windows 10 1709
BranchAffectedFixed in
—all versionsno fix published

8 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA16 products

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Windows 10 Version 1703

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows 10 Version 1803

    platforms: 32-bit Systems, x64-based Systems, ARM64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows Server, version 1803 (Server Core Installation)

    platforms: x64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows 10 Version 1809

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.17763.0, < publicationfixed in publicationcustom
  • Microsoft Windows 10 Version 1809

    platforms: ARM64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows Server 2019

    platforms: x64-based Systems

    Affected
    • ≥ 10.0.17763.0, < publicationfixed in publicationcustom

10 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-05-20

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-04-05

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
3 repositories, unverifiedRythmStick/CVE-2019-10640x00-0x00/CVE-2019-1064attackgithub/CVE-2019-1064
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-03-15
Patch Due Date
2022-04-05
Ransomware Use
Known
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2019-06-12
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-7q5j-w2g3-7f8v

Frequently asked questions

What is CVE-2019-1064?

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how Windows AppX Deployment Service handles hard links.

Is CVE-2019-1064 actively exploited?

Yes. CVE-2019-1064 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-04-05.

What is the CVSS score for CVE-2019-1064?

CVE-2019-1064 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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