CVE-2019-1064

CRITICALNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-15), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 6.9%CVSS: 7.8Exploit: cisa kev · ssvc active · kev ransomware · public exploitExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.8
EG Score
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
EPSS PROB
6.9%
EPSS %ILE
93rd
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 12, 2019

Last Modified

October 29, 2025

Advisory Details (3)

Auto-updated Jun 3, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1064
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1064
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064

Vendor Advisories for CVE-2019-1064(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 99× in last 7d / 433× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,778 total refreshes for this CVE.

  1. 2026-10-05 21:58 UTCVendor advisory
  2. 2026-10-05 21:58 UTCGHSA enrichment
  3. 2026-10-05 18:11 UTCEG score recompute
  4. 2026-10-05 18:11 UTCVendor advisory
  5. 2026-10-05 18:11 UTCGHSA enrichment
  6. 2026-10-05 17:39 UTCEPSS rescore
  7. 2026-10-05 14:24 UTCVendor advisory
  8. 2026-10-05 14:24 UTCGHSA enrichment
  9. 2026-10-05 10:38 UTCVendor advisory
  10. 2026-10-05 10:38 UTCGHSA enrichment
  11. 2026-10-05 06:51 UTCVendor advisory
  12. 2026-10-05 06:51 UTCGHSA enrichment
  13. 2026-10-05 03:03 UTCVendor advisory
  14. 2026-10-05 03:03 UTCGHSA enrichment
  15. 2026-10-04 23:15 UTCVendor advisory
  16. 2026-10-04 23:14 UTCGHSA enrichment
  17. 2026-10-04 19:28 UTCVendor advisory
  18. 2026-10-04 19:28 UTCGHSA enrichment
  19. 2026-10-04 15:39 UTCVendor advisory
  20. 2026-10-04 15:39 UTCGHSA enrichment
  21. 2026-10-04 11:52 UTCVendor advisory
  22. 2026-10-04 11:52 UTCGHSA enrichment
  23. 2026-10-04 08:05 UTCVendor advisory
  24. 2026-10-04 08:05 UTCGHSA enrichment
  25. 2026-10-04 04:19 UTCVendor advisory
Show 75 more
  1. 2026-10-04 04:18 UTCGHSA enrichment
  2. 2026-10-04 00:31 UTCVendor advisory
  3. 2026-10-04 00:31 UTCGHSA enrichment
  4. 2026-10-03 20:44 UTCVendor advisory
  5. 2026-10-03 20:44 UTCGHSA enrichment
  6. 2026-10-03 16:57 UTCEG score recompute
  7. 2026-10-03 16:57 UTCVendor advisory
  8. 2026-10-03 16:57 UTCGHSA enrichment
  9. 2026-10-03 14:22 UTCEPSS rescore
  10. 2026-10-03 13:11 UTCVendor advisory
  11. 2026-10-03 13:11 UTCGHSA enrichment
  12. 2026-10-03 09:24 UTCVendor advisory
  13. 2026-10-03 09:24 UTCGHSA enrichment
  14. 2026-10-03 05:37 UTCVendor advisory
  15. 2026-10-03 05:37 UTCGHSA enrichment
  16. 2026-10-03 01:50 UTCVendor advisory
  17. 2026-10-03 01:50 UTCGHSA enrichment
  18. 2026-10-02 22:03 UTCVendor advisory
  19. 2026-10-02 22:03 UTCGHSA enrichment
  20. 2026-10-02 18:16 UTCVendor advisory
  21. 2026-10-02 18:16 UTCGHSA enrichment
  22. 2026-10-02 18:16 UTCEG score recompute
  23. 2026-10-02 18:16 UTCVendor advisory
  24. 2026-10-02 18:16 UTCGHSA enrichment
  25. 2026-10-02 14:29 UTCVendor advisory
  26. 2026-10-02 14:29 UTCGHSA enrichment
  27. 2026-10-02 10:40 UTCVendor advisory
  28. 2026-10-02 10:39 UTCGHSA enrichment
  29. 2026-10-02 06:49 UTCVendor advisory
  30. 2026-10-02 06:49 UTCGHSA enrichment
  31. 2026-10-02 03:02 UTCVendor advisory
  32. 2026-10-02 03:02 UTCGHSA enrichment
  33. 2026-10-01 23:11 UTCEG score recompute
  34. 2026-10-01 23:11 UTCVendor advisory
  35. 2026-10-01 23:10 UTCGHSA enrichment
  36. 2026-10-01 19:22 UTCVendor advisory
  37. 2026-10-01 19:21 UTCGHSA enrichment
  38. 2026-10-01 15:33 UTCVendor advisory
  39. 2026-10-01 15:33 UTCGHSA enrichment
  40. 2026-10-01 11:46 UTCVendor advisory
  41. 2026-10-01 11:45 UTCGHSA enrichment
  42. 2026-10-01 07:55 UTCVendor advisory
  43. 2026-10-01 07:55 UTCGHSA enrichment
  44. 2026-10-01 04:08 UTCVendor advisory
  45. 2026-10-01 04:08 UTCGHSA enrichment
  46. 2026-10-01 00:21 UTCVendor advisory
  47. 2026-10-01 00:20 UTCGHSA enrichment
  48. 2026-09-30 20:31 UTCVendor advisory
  49. 2026-09-30 20:31 UTCGHSA enrichment
  50. 2026-09-30 16:44 UTCEG score recompute
  51. 2026-09-30 16:44 UTCVendor advisory
  52. 2026-09-30 16:44 UTCGHSA enrichment
  53. 2026-09-30 14:59 UTCEPSS rescore
  54. 2026-09-30 12:57 UTCVendor advisory
  55. 2026-09-30 12:57 UTCGHSA enrichment
  56. 2026-09-30 09:08 UTCVendor advisory
  57. 2026-09-30 09:07 UTCGHSA enrichment
  58. 2026-09-30 05:18 UTCVendor advisory
  59. 2026-09-30 05:18 UTCGHSA enrichment
  60. 2026-09-30 01:29 UTCVendor advisory
  61. 2026-09-30 01:29 UTCGHSA enrichment
  62. 2026-09-29 21:42 UTCVendor advisory
  63. 2026-09-29 21:42 UTCGHSA enrichment
  64. 2026-09-29 17:51 UTCEG score recompute
  65. 2026-09-29 17:51 UTCVendor advisory
  66. 2026-09-29 17:50 UTCGHSA enrichment
  67. 2026-09-29 13:56 UTCVendor advisory
  68. 2026-09-29 13:56 UTCGHSA enrichment
  69. 2026-09-29 10:09 UTCVendor advisory
  70. 2026-09-29 10:09 UTCGHSA enrichment
  71. 2026-09-29 06:18 UTCVendor advisory
  72. 2026-09-29 06:18 UTCGHSA enrichment
  73. 2026-09-29 02:32 UTCVendor advisory
  74. 2026-09-29 02:32 UTCGHSA enrichment
  75. 2026-09-28 22:45 UTCEG score recompute

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoC0x00-0x00/CVE-2019-1064
    First seen Jun 12, 2019

    CVE-2019-1064 Local Privilege Escalation Vulnerability

    Open source ↗
  • GitHub PoCRythmStick/CVE-2019-1064
    First seen Jun 12, 2019

    CVE-2019-1064 Local Privilege Escalation Vulnerability

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2019-1064?
CVE-2019-1064 is a critical vulnerability published on June 12, 2019. 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…
When was CVE-2019-1064 disclosed?
CVE-2019-1064 was first published on June 12, 2019, with the most recent update on October 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-1064 actively exploited?
Yes. CISA added CVE-2019-1064 to the Known Exploited Vulnerabilities catalog on March 15, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2019-1064?
CVE-2019-1064 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
Which products are affected by CVE-2019-1064?
CVE-2019-1064 affects Microsoft Windows.
How do I remediate CVE-2019-1064?
A fix for CVE-2019-1064 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2019-1064 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2019-1064

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