Summary
Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What type of information could be disclosed by this vulnerability?
This vulnerability may allow an attacker to access small portions of memory from the affected application when it processes a specially crafted Enhanced Metafile (EMF). This issue is an out‑of‑bounds read, any disclosure would be limited to whatever data happens to reside in adjacent memory at the time.
According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
The user would have to open or preview content that contains the malicious Enhanced Metafile (EMF).
Security updates
10.0.20348.5020 — https://support.microsoft.com/help/5082142
10.0.19044.7184 — https://support.microsoft.com/help/5082200
10.0.26100.32690 — https://support.microsoft.com/help/5082063
10.0.26200.8246 — https://support.microsoft.com/help/5083769
10.0.22631.6936 — https://support.microsoft.com/help/5082052
10.0.25398.2274 — https://support.microsoft.com/help/5082060
10.0.28000.1836 — https://support.microsoft.com/help/5083768
Vulnerabilities 1
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Medium 5.5
Windows GDI Information Disclosure Vulnerability
Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.
Revision history
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#1
Information published.
References
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CVE-2026-27931 Windows GDI Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27931
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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