CVE-2026-97813: Windows Hyper-V Information Disclosure Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to disclose information over a network.
Other sources
Windows Hyper-V 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 10.0.19044.7807Patch KB5126657 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The attacker must be authorized and have low-level privileges. Exploitation can be performed over a network and does not require user interaction.
What is the primary security impact?
Successful exploitation may allow disclosure of information. The provided severity vector does not indicate an integrity or availability impact.
Which systems should be prioritized for review?
Review deployments using Windows Hyper-V on the listed Windows 10, Windows 11, Windows Server 2019, Windows Server 2022, and Windows Server 2025 platforms, particularly where authorized low-privilege users can reach Hyper-V over the network.