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Vulnerability record · CVE-2021-3747 · published 1 October 2021

CVE-2021-3747: Canonical multipass incorrect permission assignment vulnerability

Canonical · Multipass

The MacOS version of Multipass, version 1.7.0, fixed in 1.7.2, accidentally installed the application directory with incorrect owner.

7.8 CVSS 3.1 High EPSS 0.25% · top 85.8% CWE-732 · Incorrect permission assignment
7.8CVSS 3.1 base score, v2 4.6
0.25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The MacOS version of Multipass, version 1.7.0, fixed in 1.7.2, accidentally installed the application directory with incorrect owner.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/canonical/multipass/issues/2261 Issue TrackingPatchThird Party Advisory
https://github.com/canonical/multipass/issues/2261 Issue TrackingPatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2021-3626Canonical multipass improper access control vulnerabilityThe 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 ope…EPSS 0.25%8.4CVE-2026-49238Canonical multipass path traversal vulnerabilityAn issue was discovered in Canonical Multipass before version 1.16.3. The host-side SFTP server component (sshfs_server), which executes with root pr…EPSS 0.45%7.8CVE-2026-49237Canonical multipass incorrect default permissions vulnerabilityAn issue was discovered in Canonical Multipass for macOS before version 1.16.3 due to an incomplete fix for CVE-2025-5199. While the patch in version…EPSS 0.16%7.8CVE-2025-5199Canonical multipass incorrect default permissions vulnerabilityIn Canonical Multipass up to and including version 1.15.1 on macOS, incorrect default permissions allow a local attacker to escalate privileges by mo…EPSS 0.15%4.3CVE-2018-13374FortiOS and FortiADC access control flaw exposes LDAP credentialsFortiOS (6.0.2, 5.6.7 and earlier) and FortiADC (6.1.0, 6.0.0-6.0.1, 5.4.0-5.4.4) contain an improper access control flaw. An attacker can redirect a…KEVEPSS 38%analysed7.8CVE-2022-22960VMware Workspace ONE Access and related products local privilege escalationVMware Workspace ONE Access, Identity Manager, vRealize Automation and related products ship support scripts with incorrect permission assignments (C…KEVEPSS 36%analysed7.8CVE-2021-23874McAfee Total Protection local privilege escalation via self-defense bypassMcAfee Total Protection before 16.0.30 has an improper privilege management flaw that lets a local user bypass the product's self-defense mechanism a…KEVEPSS 1.0%analysed7.8CVE-2019-15752Docker Desktop Community Edition local privilege escalation via writable credential binaryDocker Desktop Community Edition before 2.1.0.1 assigns incorrect permissions to the %PROGRAMDATA%\DockerDesktop\version-bin\ directory, letting a lo…KEVEPSS 49%analysed

Source: NIST National Vulnerability Database (record CVE-2021-3747), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.