CVE-2026-34009
**Container Escape** Host user home directory mounted with write access into application container
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
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
**Container Escape** Host user home directory mounted with write access into application container
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
- Record
CVE-2026-34009- CVSS 4.0
- 8.4 High
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 - Weakness
- CWE-653
- Updated
- 2026-11-02
EUVDEUVD-2026-101985
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
- Record
EUVD-2026-101985- CVSS 4.0
- 8.4 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qj84-cjxx-3366
An improper isolation or compartmentalization vulnerability has been reported to affect Notes...
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
- Record
GHSA-qj84-cjxx-3366- CVSS 4.0
- 8.4 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-653
- Updated
- 2026-11-02
NVD
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
- Record
CVE-2026-34009- CVSS 4.0
- 8.4 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-653
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-34009 is a high vulnerability (CVSS 8.4) in Qnap Systems Inc. Notes Station 3, published October 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. No source names a fixed version.