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CVE-2026-56184 — Win32k Information Disclosure Vulnerability | VulniPulse
5.5 Vendor: High Microsoft Server
Win32k Information Disclosure Vulnerability CVE-2026-56184 Affected products & platforms
Microsoft Server Windows Server
Summary Win32k Information Disclosure Vulnerability Affected products named by the advisory: Windows Server 2022; Windows Server 2025.
What this means In plain English Win32k Information Disclosure Vulnerability Affected products named by the advisory: Windows Server 2022; Windows Server 2025.
Recommended action Upgrade to a vendor-listed fixed release: KB5099540 (build 10.0.20348.5386), KB5099539 (build 10.0.19045.7548), KB5099536 (build 10.0.26100.33158), KB5101650 (build 10.0.26100.8875), KB5101649 (build 10.0.28000.2525). Vendor-listed mitigations/workarounds: Install the applicable security update for your platform: KB5099540, KB5099539, KB5099536, KB5101650, KB5101649 (see the Microsoft Update Catalog).
(0) No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Affected versions No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Fixed versions
KB5099540 (build 10.0.20348.5386) KB5099539 (build 10.0.19045.7548) KB5099536 (build 10.0.26100.33158) KB5101650 (build 10.0.26100.8875) KB5101649 (build 10.0.28000.2525) Mitigation checklist Recommended fix / mitigation
Install the applicable security update for your platform: KB5099540, KB5099539, KB5099536, KB5101650, KB5101649 (see the Microsoft Update Catalog). Official advisory · high-confidence parse · fetched 3 hours ago · verify at source
Direct download of the KB5099539 security update named in the MSRC remediation data for this CVE.
MSRC Security Update Guide Official documentation
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