CVE-2026-34009
High
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
SeverityHigh
CVSS8.4
Exploit probability—
ProductNotes Station 3
PublishedOct 15, 2026
First seenOct 15, 2026
Weakness typeCWE-653CWE-653
How to fix
Update
- QNAP Systems Inc. Notes Station 33.9.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| QNAP Systems Inc. Notes Station 3 | 3.9.x ≤ v < 3.9.11 | 3.9.11 |
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