Is CVE-2026-22899 in the CISA KEV catalog?

No. CVE-2026-22899 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-22899?

CVE-2026-22899 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-22899?

CVE-2026-22899 has an EPSS score of 0.28% (20th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-22899?

Upgrade file station to 5.5.6.5208 or later.

CVE & CISA-KEV Catalog

CVE-2026-22899

MEDIUM

6.5

CVSS v3

NVD

Description

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

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

file stationNVD

Affected:>= 5.5.6.4691, < 5.5.6.5208Fixed in:5.5.6.5208CVE-2026-22899derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.28%probability of exploitation in 30 days

20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Other references1

qnap.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-12.