How severe is CVE-2022-43748?

CVE-2022-43748 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2022-43748 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43748?

CVE-2022-43748 affects Synology Presto File Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43748?

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

When was CVE-2022-43748 published?

CVE-2022-43748 was published on 2022-10-26 and last updated on 2026-06-17.

CVE-2022-43748

CVE-2022-43748 is a medium-severity vulnerability in Synology Presto File Server with a CVSS 3.x base score of 5.8. 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 5.8)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Synology Presto File Server
Published: 2022-10-26
Last modified: 2026-06-17

Description

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in file operation management in Synology Presto File Server before 2.1.2-1601 allows remote attackers to write arbitrary files via unspecified vectors.

Frequently asked questions

What is CVE-2022-43748?: Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in file operation management in Synology Presto File Server before 2.1.2-1601 allows remote attackers to write arbitrary files via unspecified vectors.
How severe is CVE-2022-43748?: CVE-2022-43748 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2022-43748 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43748?: CVE-2022-43748 affects Synology Presto File Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43748?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-43748 published?: CVE-2022-43748 was published on 2022-10-26 and last updated on 2026-06-17.

References

https://www.synology.com/security/advisory/Synology_SA_22_19

Affected products (1)

cpe:2.3:a:synology:presto_file_server:*:*:*:*:*:*:*:*

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