CVE-2021-40450
Microsoft Windows 10 1809 ≤ 10.0.17763.2237
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2021-40450 is a high-severity an unspecified weakness vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 20% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2021-40450 is a Win32k elevation of privilege vulnerability affecting the Win32k component in Windows. It carries a CVSS 3.1 score of 7.8 reflecting local attack vector, low complexity, low privileges required, and no user interaction, with high impact on confidentiality, integrity, and availability.
An attacker with existing local access and limited privileges can exploit the flaw to elevate rights on the target system, potentially obtaining full administrative control.
Microsoft has published security guidance for the issue via its advisory portal, and the vulnerability appears in CISA's catalog of known exploited vulnerabilities, confirming observed real-world exploitation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-27627
Vulnerability Data
Win32k Elevation of Privilege Vulnerability
- CWE(s)
- KEV Date Added
- 25 April 2022
Related Threats
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Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.