CVE-2019-1253

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: 12%CVSS: 7.8Exploit: cisa kev · ssvc active · kev ransomware · epss top5pct · 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 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 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
12%
EPSS %ILE
96%
KEV
⚠ Exploited

Published

September 11, 2019

Last Modified

October 29, 2025

Advisory Details (2)

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-2019-1253
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-2019-1253

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 63× in last 7d / 361× 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 723 total refreshes for this CVE.

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

Publicly available exploits

(4 references)

Working exploit code is in the public domain (3 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-47389
    First seen Sep 16, 2019

    AppXSvc - Privilege Escalation

    Open source ↗
  • GitHub PoCpadovah4ck/CVE-2019-1253
    First seen Sep 11, 2019

    Poc for CVE-2019-1253

    Open source ↗
  • GitHub PoCsgabe/CVE-2019-1253
    First seen Sep 11, 2019

    AppXSvc Arbitrary File Security Descriptor Overwrite EoP

    Open source ↗
  • GitHub PoCrogue-kdc/CVE-2019-1253
    First seen Apr 10, 2019
    Open source ↗

Frequently asked(6)

What is CVE-2019-1253?
CVE-2019-1253 is a critical vulnerability published on September 11, 2019. 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…
When was CVE-2019-1253 disclosed?
CVE-2019-1253 was first published in the National Vulnerability Database on September 11, 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-2019-1253 actively exploited?
Yes. CISA added CVE-2019-1253 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-2019-1253?
CVE-2019-1253 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-2019-1253?
CVE-2019-1253 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-2019-1253?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-1253, 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

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