CVE-2019-1215

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 2021-11-03), 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: 19%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 in the way that ws2ifsl.sys (Winsock) handles objects in memory, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1253, 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
19%
EPSS %ILE
97%
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-2019-1215
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-2019-1215

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 69× in last 7d / 386× 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 777 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-47935
    First seen Jan 7, 2020

    Microsoft Windows 10 (19H1 1901 x64) - 'ws2ifsl.sys' Use After Free Local Privilege Escalation (kASLR kCFG SMEP)

    Open source ↗
  • GitHub PoCbluefrostsecurity/CVE-2019-1215
    First seen Jan 6, 2020
    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2019-1215?
CVE-2019-1215 is a critical vulnerability published on September 11, 2019. An elevation of privilege vulnerability exists in the way that ws2ifsl.sys (Winsock) handles objects in memory, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1253, CVE-2019-1278, CVE-2019-1303.
When was CVE-2019-1215 disclosed?
CVE-2019-1215 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-2019-1215 actively exploited?
Yes. CISA added CVE-2019-1215 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-1215?
CVE-2019-1215 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-2019-1215?
CVE-2019-1215 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-2019-1215?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-1215, 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-2019-1215

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