CVE-2026-58533: Windows Remote Desktop Client Information Disclosure Vulnerability
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.
Other sources
Windows Remote Desktop Client Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2525Patch KB5101649 - Upgrade
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Fixed in 10.0.26100.8875Patch KB5101650 - Upgrade
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Fixed in 10.0.26100.33158Patch KB5099536 - Upgrade
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Fixed in 10.0.17763.9020Patch KB5099538 - Upgrade
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Fixed in 10.0.19045.7548Patch KB5099539 - Upgrade
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Fixed in 10.0.20348.5386Patch KB5099540 - Upgrade
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Fixed in 10.0.19044.7548Patch KB5099539 - Upgrade
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Fixed in 6.2.9200.26226Patch KB5099445 - Upgrade
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Fixed in 6.3.9600.23291Patch KB5099444 - Upgrade
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Fixed in 10.0.14393.9339Patch KB5099535 - Upgrade
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Fixed in 10.0.26200.8875Patch KB5101650
Event History
Frequently Asked Questions
Which systems should be included in the exposure review?
Review Microsoft Windows 10, Windows 11, and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025 systems that use the Windows Remote Desktop Client.
Does exploitation require attacker authentication or elevated privileges?
No privileges are required according to the provided vector. Exploitation is network-based and has low attack complexity, but it requires user interaction.
What is the expected security impact if exploitation succeeds?
The stated impact is disclosure of information. The provided vector rates confidentiality impact as high, with no integrity or availability impact indicated.