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Status published
High
CVE-2021-3626
Windows version of Multipass unauthenticated localhost tcp control socket can perform mounts
Vulnerability Description
The Windows version of Multipass before 1.7.0 allowed any local process to connect to the localhost TCP control socket to perform mounts from the operating system to a guest, allowing for privilege escalation.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Micah Lee
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Affected Vendor
Canonical
View all reports →Affected Software
Multipass
Vulnerable Versions:
unspecified
Timeline
Official Publish:
October 1st, 2021
Last Modified:
September 17th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
MITRE ATT&CK TTPs
T1190
Exploit Public-Facing Application
Initial Access
T1005
Data from Local System
Collection
T1105
Ingress Tool Transfer
Command and Control
T1574
Hijack Execution Flow
Privilege Escalation
T1565
Data Manipulation
Impact
T1068
Exploitation for Privilege Escalation
Privilege Escalation
T1078
Valid Accounts
Persistence
T1213
Data from Information Repositories
Collection
T1565.002
Stored Data Manipulation
Impact