What is CVE-2026-22899?

CVE-2026-22899 is a medium-severity vulnerability in Qnap File_station, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-06-10.

How severe is CVE-2026-22899?

Medium severity. CVSS v3 base score is 6.5 out of 10.

NULL pointer dereference in Qnap File_station

CVE-2026-22899

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…

EPSS: 0.004 (30.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Qnap File_station
Qnap Systems Inc. File Station 5 — versions 5.5.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

security@qnapsecurity.com.tw (Broken Link)
security@qnapsecurity.com.tw

Frequently asked questions

What is CVE-2026-22899?: CVE-2026-22899 is a medium-severity vulnerability in Qnap File_station, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-06-10.
How severe is CVE-2026-22899?: Medium severity. CVSS v3 base score is 6.5 out of 10.