CVE-2026-34009
Notes Station 3: **Container Escape** Host user home directory mounted with write access into application container
QNAP Systems Inc. Notes Station 3
CVSS
8.4HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.14%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 3.9.11Notes Station 3CVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
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
Text from CVE List
Affected versions 1
- Notes Station 3affected: 3.9.x before 3.9.11CVE List