# CVE-2026-47652: Microsoft Hyper-V out-of-bounds read code execution

Source: https://junglewise.ai/threats/cve-2026-47652-microsoft-hyper-v-out-of-bounds-read-code-execution  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-47652 · Severity: high · CVSS 8.2 · Published 2026-06-09

Microsoft Hyper-V is a virtualization platform that allows multiple operating systems to run on a single physical server. A security flaw in this component could allow a user with high privileges on a guest virtual machine to break out and execute malicious code on the underlying host system. This could lead to a complete compromise of the server, impacting all other virtual machines and sensitive data stored on the host.

Technologies: [Microsoft Hyper-V](https://junglewise.ai/threats/technologies/hyper-v). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-47652 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47652 being exploited in the wild.

**How severe is CVE-2026-47652?** High severity, with a CVSS score of 8.2, published 9 June 2026.

**Which products and versions are affected?** Microsoft Hyper-V.

**Is there a fix for CVE-2026-47652?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-47652 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-47652?** Check whether you run Microsoft Hyper-V. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A heap-based buffer overflow (CWE-122) exists in Windows Hyper-V due to an out-of-bounds read flaw. The vulnerability is triggered locally by an attacker who already possesses high privileges (PR:H) on a guest virtual machine. By exploiting this memory corruption issue, the attacker can achieve a virtual machine escape, leading to arbitrary code execution on the host operating system (Scope: Changed). Microsoft has released security updates to address this vulnerability via the MSRC update guide.

## Affected products

- Microsoft Hyper-V

## Timeline

- 2026-06-09: disclosed
- 2026-06-09: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47652](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47652)

## Related threats

- [Windows Hyper-V use after free privilege escalation](https://junglewise.ai/threats/cve-2026-119947-use-after-free-in-windows-hyper-v-allows-an-authorized-attacker)
- [Microsoft Windows Hyper-V heap overflow privilege escalation](https://junglewise.ai/threats/cve-2026-50680-microsoft-windows-hyper-v-heap-overflow-privilege-escalation)
- [Microsoft Hyper-V buffer over-read denial of service](https://junglewise.ai/threats/cve-2026-50485-microsoft-hyper-v-buffer-over-read-denial-of-service)
- [Microsoft Hyper-V code execution via type confusion](https://junglewise.ai/threats/cve-2026-45641-microsoft-hyper-v-code-execution-via-type-confusion)
- [Microsoft Hyper-V out-of-bounds read code execution](https://junglewise.ai/threats/cve-2026-45607-microsoft-hyper-v-out-of-bounds-read-code-execution)