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 — 5 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: 7%CVSS: 7.8Exploit: cisa kev · ssvc active · kev ransomware · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
7%
EPSS %ILE
94%
KEV
⚠ Exploited

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

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 102× in last 7d / 377× 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 1,124 total refreshes for this CVE.

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

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 PoCRythmStick/CVE-2019-1064
    First seen Jun 12, 2019

    CVE-2019-1064 Local Privilege Escalation Vulnerability

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

    CVE-2019-1064 Local Privilege Escalation Vulnerability

    Open source ↗

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 in the National Vulnerability Database 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 patching attention.
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.
Which products are affected by CVE-2019-1064?
CVE-2019-1064 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2019-1064?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-1064, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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

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