CVE-2026-87705

high

Description

Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized attacker to bypass a security feature over an adjacent network.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87705

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-100072

Details

Source: Mitre, NVD

Published: 2026-10-13

Updated: 2026-10-13

Risk Information

CVSS v2

Base Score: 6.1

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 7.4

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Severity: High

EPSS

EPSS: 0.00349

Detections

Analytics