How severe is CVE-2023-52946?

CVE-2023-52946 has a CVSS 3.x base score of 8.2, rated high 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 high.

Is CVE-2023-52946 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52946?

CVE-2023-52946 affects Synology Drive Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52946?

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-2023-52946 have an EU (EUVD) identifier?

Yes. CVE-2023-52946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59630.

When was CVE-2023-52946 published?

CVE-2023-52946 was published on 2024-09-26 and last updated on 2026-06-17.

CVE-2023-52946

CVE-2023-52946 is a high-severity vulnerability in Synology Drive Client with a CVSS 3.x base score of 8.2. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-59630
Weakness: CWE-120
Affected product: Synology Drive Client
Published: 2024-09-26
Last modified: 2026-06-17

Description

Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in vss service component in Synology Drive Client before 3.5.0-16084 allows remote attackers to overwrite trivial buffers and crash the client via unspecified vectors.

Frequently asked questions

What is CVE-2023-52946?: Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in vss service component in Synology Drive Client before 3.5.0-16084 allows remote attackers to overwrite trivial buffers and crash the client via unspecified vectors.
How severe is CVE-2023-52946?: CVE-2023-52946 has a CVSS 3.x base score of 8.2, rated high 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 high.
Is CVE-2023-52946 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52946?: CVE-2023-52946 affects Synology Drive Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52946?: 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-2023-52946 have an EU (EUVD) identifier?: Yes. CVE-2023-52946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59630.
When was CVE-2023-52946 published?: CVE-2023-52946 was published on 2024-09-26 and last updated on 2026-06-17.

References

https://www.synology.com/en-global/security/advisory/Synology_SA_24_10

Affected products (1)

cpe:2.3:a:synology:drive_client:*:*:*:*:*:desktop:*:*

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