Exploited CVEs / Microsoft / CVE-2019-0808
CVE-2019-0808
Microsoft Win32k Privilege Escalation Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2022-05-03 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Microsoft Security Update Guide (MSRC), linked below.
Actively exploited Microsoft Win32k vulnerability. Added to the CISA KEV catalog 2021-11-03.
Risk summary
Updated July 26, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2019-0808
CVE-2019-0808 is a Win32k kernel-mode privilege escalation flaw where the component mishandles objects in memory, letting a local attacker gain kernel-level code execution. It was paired in the wild with browser exploits as the escalation stage to break out of sandboxes, and CISA confirmed active exploitation by adding it to the KEV catalog on 2021-11-03. Any unpatched Windows system with the affected Win32k component is exposed, and while there is no known ransomware use, kernel access gives an attacker full control of the host.
Do this: Apply the March 2019 Microsoft security update that patches Win32k on all affected Windows systems, prioritizing internet-facing and user-facing endpoints.
AI-generated from public data, 2026-07-22. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2019-0808
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2019-0808
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2022-05-03 (past due).
Official fix for CVE-2019-0808
The authoritative fix and affected-version list are published by the vendor. Find the Win32k advisory on Microsoft Security Update Guide (MSRC).
Common questions about CVE-2019-0808
Is CVE-2019-0808 actively exploited?
Yes. CVE-2019-0808 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03, which means exploitation in the wild has been confirmed, not predicted.
What is the CISA deadline and required action for CVE-2019-0808?
CISA set the federal (BOD 22-01) remediation due date at 2022-05-03, which has passed; treat any unremediated system as overdue.
What fixes CVE-2019-0808?
The authoritative fix is in the vendor advisory: see Microsoft Security Update Guide (MSRC) for the patched Win32k versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2019-0808?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2019-0808's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
More exploited Microsoft CVEs
The newest Microsoft entries on the CISA KEV catalog:
All Microsoft exploited CVEs on one page: Microsoft vulnerabilities actively exploited.
Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
