CVE-2023-21766
Windows Overlay Filter Information Disclosure Vulnerability
MEDIUM
4.7
CVSS Score
Published: January 10, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:33 AM UTC
13 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows 10 1809
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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.9%
SSVC
No known exploit
Description
Windows Overlay Filter Information Disclosure Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
10.0.10240.0 ≤ v < 10.0.10240.1968510.0.10240.0
Affected range stops below 10.0.10240.19685, so it looks safe — our inference, not a vendor statement
10.0.14393.0 ≤ v < 10.0.14393.564810.0.14393.0
Affected range stops below 10.0.14393.5648, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.17763.3887, so it looks safe — our inference, not a vendor statement
10.0.14393.0 ≤ v < 10.0.14393.564810.0.14393.0
Affected range stops below 10.0.14393.5648, so it looks safe — our inference, not a vendor statement
10.0.17763.0 ≤ v < 10.0.17763.388710.0.17763.0
Affected range stops below 10.0.17763.3887, so it looks safe — our inference, not a vendor statement
10.0.20348.0 ≤ v < 10.0.20348.148710.0.20348.0
Affected range stops below 10.0.20348.1487, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.19042.248610.0.0
Affected range stops below 10.0.19042.2486, so it looks safe — our inference, not a vendor statement
10.0.19043.0 ≤ v < 10.0.19044.248610.0.19043.0
Affected range stops below 10.0.19044.2486, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor Advisory
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21766SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
4.7MEDIUMmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-591CWE-362
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