CVE-2017-7471
Qemu: 9p: virtfs allows guest to change filesystem attributes on host
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · April 18, 2017
Updated · November 22, 2025
Description
Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System (9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing files on a shared host directory. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 7.6CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 · 6.5AV:A/AC:H/Au:S/C:C/I:C/A:C
CWE-284 · Improper Access Control