Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
According to the CVSS metric, user interaction is required (UI:R) and privileges required is Low (PR:L). What does that mean for this vulnerability?
This means an authenticated user can upload malicious content, but exploitation only occurs if they convince another user to visit or interact with that content.
Security updates
10.0.17763.8389 — https://support.microsoft.com/help/5075904
10.0.20348.4773 — https://support.microsoft.com/help/5075906
10.0.20348.4711 — https://support.microsoft.com/help/5075943
10.0.19044.6937 — https://support.microsoft.com/help/5075912
10.0.22631.6649 — https://support.microsoft.com/help/5075941
10.0.14393.8868 — https://support.microsoft.com/help/5075999
6.2.9200.25923 — https://support.microsoft.com/help/5075971
6.3.9600.23022 — https://support.microsoft.com/help/5075970
10.0.28000.1575 — https://support.microsoft.com/help/5077179
Vulnerabilities 1
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High 7.3
Windows Graphics Component Elevation of Privilege Vulnerability
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
Revision history
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#1
Information published.
References
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CVE-2026-21235 Windows Graphics Component Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21235
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss