File Station 6 NULL PTR DoS (fixed 5.5.6.5208+)
CVE-2026-22899 Published on June 10, 2026
File Station 5
A NULL pointer dereference vulnerability has been reported to affect File Station 6. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack.
We have already fixed the vulnerability in the following version:
File Station 5 5.5.6.5208 and later
Weakness Type
NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
Products Associated with CVE-2026-22899
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Affected Versions
QNAP Systems Inc. File Station 5:- Version 5.5.0 and below 5.5.6.5208 is affected.