CVE-2019-1215CISA KEV

Microsoft Windows Privilege Escalation Vulnerability

Severity unknownCVSS unknownCheck the vendor advisory for fixed versions

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

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.

Product: Windows
Added to KEV: 3 Nov 2021
Federal remediation due: 3 May 2022
Known ransomware use: Yes

Page history

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Field-level log (2)

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23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

Explore global source statements, affected packages and advisory history for CVE-2019-1215. The catalog has a separate collection scope from Microsoft release records.

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Related advisories and sources

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2019-1215 · CVE overview and exploitation status

cve-program · CVE-2019-1215

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1215

Related changes

Linked by CVE identifier

Microsoft Windows Privilege Escalation Vulnerability · CISA KEV deadline · 3 May 2022
Microsoft Windows Privilege Escalation Vulnerability · Added to CISA KEV · 3 Nov 2021