How severe is CVE-2022-27621?

CVE-2022-27621 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-27621 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-27621?

CVE-2022-27621 affects Synology Usb Copy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-27621?

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

When was CVE-2022-27621 published?

CVE-2022-27621 was published on 2022-08-03 and last updated on 2026-06-17.

CVE-2022-27621

CVE-2022-27621 is a medium-severity vulnerability in Synology Usb Copy with a CVSS 3.x base score of 5.5. 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 5.5)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Synology Usb Copy
Published: 2022-08-03
Last modified: 2026-06-17

Description

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology USB Copy before 2.2.0-1086 allows remote authenticated users to read or write arbitrary files via unspecified vectors.

Frequently asked questions

What is CVE-2022-27621?: Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology USB Copy before 2.2.0-1086 allows remote authenticated users to read or write arbitrary files via unspecified vectors.
How severe is CVE-2022-27621?: CVE-2022-27621 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-27621 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-27621?: CVE-2022-27621 affects Synology Usb Copy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-27621?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-27621 published?: CVE-2022-27621 was published on 2022-08-03 and last updated on 2026-06-17.

References

https://www.synology.com/security/advisory/Synology_SA_22_14

Affected products (1)

cpe:2.3:a:synology:usb_copy:*:*:*:*:*:*:*:*

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