How severe is CVE-2025-62853?

CVE-2025-62853 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-62853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-62853?

CVE-2025-62853 affects Qnap File Station. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-62853?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-62853 have an EU (EUVD) identifier?

Yes. CVE-2025-62853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206933.

When was CVE-2025-62853 published?

CVE-2025-62853 was published on 2026-02-11 and last updated on 2026-06-17.

CVE-2025-62853

CVE-2025-62853 is a medium-severity vulnerability in Qnap File Station with a CVSS 3.x base score of 6.5. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 5.2
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206933
Weakness: CWE-22
Affected product: Qnap File Station
Published: 2026-02-11
Last modified: 2026-06-17

Description

A path traversal vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5166 and later

Frequently asked questions

What is CVE-2025-62853?: A path traversal vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5166 and later
How severe is CVE-2025-62853?: CVE-2025-62853 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-62853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-62853?: CVE-2025-62853 affects Qnap File Station. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-62853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-62853 have an EU (EUVD) identifier?: Yes. CVE-2025-62853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206933.
When was CVE-2025-62853 published?: CVE-2025-62853 was published on 2026-02-11 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-26-03

Affected products (1)

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

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