How severe is CVE-2025-47206?

CVE-2025-47206 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-47206 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-47206?

CVE-2025-47206 affects Qnap File Station. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-47206?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-47206 have an EU (EUVD) identifier?

Yes. CVE-2025-47206 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25778.

When was CVE-2025-47206 published?

CVE-2025-47206 was published on 2025-08-18 and last updated on 2026-06-17.

CVE-2025-47206

CVE-2025-47206 is a high-severity vulnerability in Qnap File Station with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v4: 7.1
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25778
Weakness: CWE-787
Affected product: Qnap File Station
Published: 2025-08-18
Last modified: 2026-06-17

Description

An out-of-bounds write vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify or corrupt memory. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.4933 and later

Frequently asked questions

What is CVE-2025-47206?: An out-of-bounds write vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify or corrupt memory. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.4933 and later
How severe is CVE-2025-47206?: CVE-2025-47206 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-47206 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-47206?: CVE-2025-47206 affects Qnap File Station. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-47206?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-47206 have an EU (EUVD) identifier?: Yes. CVE-2025-47206 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25778.
When was CVE-2025-47206 published?: CVE-2025-47206 was published on 2025-08-18 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-25-31

Affected products (1)

cpe:2.3:a:qnap:file_station:*:*:*:*:*:*:*:*

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