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