CVE-2019-1215

HIGHNVD 7.89.0▲Trending — 5 sources updated this weekExploited in the wild

7.8

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)
EPSS: 90.1%
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.

CWE-269Improper Privilege Management

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.

Microsoft MSRCCVE-2019-12152019-09-10
Windows Elevation of Privilege Vulnerability

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 02:09 UTCEG score recompute
2026-06-04 02:09 UTCVendor advisory
2026-06-04 02:09 UTCGHSA enrichment
2026-06-03 22:17 UTCEG score recompute
2026-06-03 22:17 UTCVendor advisory
2026-06-03 22:17 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 18:25 UTCEG score recompute
2026-06-03 18:25 UTCVendor advisory
2026-06-03 18:25 UTCGHSA enrichment
2026-06-03 14:33 UTCEG score recompute
2026-06-03 14:33 UTCVendor advisory
2026-06-03 14:33 UTCGHSA enrichment
2026-06-03 10:40 UTCEG score recompute
2026-06-03 10:40 UTCVendor advisory
2026-06-03 10:40 UTCGHSA enrichment
2026-06-03 06:48 UTCEG score recompute
2026-06-03 06:48 UTCVendor advisory
2026-06-03 06:48 UTCGHSA enrichment
2026-06-03 02:56 UTCEG score recompute

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 ↗

Frequently asked(6)

What is CVE-2019-1215?

CVE-2019-1215 is a high 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-1215

Explore →

Is Your Infrastructure Affected by CVE-2019-1215?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2019-1215

Published

Last Modified

Advisory Details (2)

Known Exploited Vulnerabilities Catalog | CISA

Security Update Guide - Microsoft Security Response Center

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-1215?

Same vendor

Same CWE

CVE-2019-1215

📅 Published

🔄 Last Modified

📋 Advisory Details (2)

Known Exploited Vulnerabilities Catalog | CISA

Security Update Guide - Microsoft Security Response Center

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-1215?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (2)

Frequently asked(6)

Related CVEs(same vendor + same CWE)