CVE-2026-34009 PUBLISHED

Container Escape Host user home directory mounted with write access into application container

Assigner: qnap
Reserved: 25.03.2026 Published: 15.10.2026 Updated: 15.10.2026

An improper isolation or compartmentalization vulnerability has been reported to affect Notes Station 3. If a local attacker gains an administrator account, they can then exploit the vulnerability to compromise the security of the system.

We have already fixed the vulnerability in the following version: Notes Station 3 3.9.11 and later

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	QNAP Systems Inc.
Product	Notes Station 3
Versions	Default: unaffected affected from 3.9.x to 3.9.11 (excl.)

Solutions

We have already fixed the vulnerability in the following version: Notes Station 3 3.9.11 and later

Credits

Runic Labs finder

References

https://www.qnap.com/en/app-release-notes?keyword=Notes%20Station%203&app=NotesStation3&product-line=nas

Problem Types

CWE-653 CWE

Impacts

CAPEC-165