Is CVE-2019-1215 in the CISA KEV catalog?

Yes. CVE-2019-1215 is on the CISA Known Exploited Vulnerabilities list, added 2021-11-03, and has known ransomware campaign use.

What is the CVSS severity of CVE-2019-1215?

CVE-2019-1215 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2019-1215?

CVE-2019-1215 has an EPSS score of 19.25% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2019-1215?

No published fix for CVE-2019-1215 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-05-03. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2019-1215

HIGHCISA KEVEPSS 97th pctl

7.8

CVSS v3

NVD

Description

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.

CWE-269Improper Privilege Management

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply updates per vendor instructions.

Federal remediation due: 2022-05-03

Known ransomware campaign use

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

19.25%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Windows Privilege Escalation Vulnerability

Microsoft Windows contains an unspecified vulnerability due to the way ws2ifsl.sys (Winsock) handles objects in memory, allowing for privilege escalation. Successful exploitation allows an attacker to execute code with elevated privileges.

Apply updates per vendor instructions.

Remediation due: 2022-05-03

Associated with ransomware campaigns

References

Patch1

portal.msrc.microsoft.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-269 (Improper Privilege Management) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12635	Critical	9.8	100%	-	Fix
CVE-2022-24637	Critical	9.8	99%	-	Fix
CVE-2017-5689	Critical	9.8	92%	KEV	Fix
CVE-2020-3243	Critical	9.8	88%	-	-
CVE-2024-21888	High	8.8	87%	-	-
CVE-2022-0441	Critical	9.8	85%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-29.