How severe is CVE-2022-21882?

CVE-2022-21882 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-21882 being actively exploited?

Yes. CVE-2022-21882 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-02-04, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2022-21882?

CVE-2022-21882 primarily affects Microsoft Windows 10 1809. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-21882?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2022-21882 have an EU (EUVD) identifier?

Yes. CVE-2022-21882 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-27038. It is also flagged as exploited in the EUVD (since 2022-02-04).

When was CVE-2022-21882 published?

CVE-2022-21882 was published on 2022-01-11 and last updated on 2026-06-17.

CVE-2022-21882

CVE-2022-21882 is a high-severity vulnerability in Microsoft Windows 10 1809 with a CVSS 3.x base score of 7.0. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-02-04). The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.0)
CVSS v2: 7.2
EPSS exploit prediction: 56% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-02-04)
EU (EUVD) id: EUVD-2022-27038
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-02-04)
Weakness: CWE-787
Affected product: Microsoft Windows 10 1809
Published: 2022-01-11
Last modified: 2026-06-17

Description

Win32k Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2022-21882?: Win32k Elevation of Privilege Vulnerability
How severe is CVE-2022-21882?: CVE-2022-21882 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-21882 being actively exploited?: Yes. CVE-2022-21882 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-02-04, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2022-21882?: CVE-2022-21882 primarily affects Microsoft Windows 10 1809. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-21882?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2022-21882 have an EU (EUVD) identifier?: Yes. CVE-2022-21882 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-27038. It is also flagged as exploited in the EUVD (since 2022-02-04).
When was CVE-2022-21882 published?: CVE-2022-21882 was published on 2022-01-11 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*

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