Is CVE-2011-1872 being actively exploited?

CVE-2011-1872 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-1872?

CVE-2011-1872 has a CVSS 2.0 base score of 4.7 (MEDIUM).

CVE-2011-1872

MEDIUM · CVSS 4.7EPSS 2.6%EU EUVD

Hyper-V in Microsoft Windows Server 2008 Gold, SP2, R2, and R2 SP1 allows guest OS users to cause a denial of service (host OS infinite loop) via malformed machine instructions in a VMBus packet, aka "VMBus Persistent DoS Vulnerability."

Key facts

CVSS score: 4.7 (v2.0)
Severity: MEDIUM
CVSS vector: AV:L/AC:M/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-399
EPSS score: 2.6% (86th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-1870)
Published: June 16, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-1870 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain