How severe is CVE-2023-52947?

CVE-2023-52947 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-52947 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52947?

CVE-2023-52947 affects Synology Active Backup For Business Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52947?

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

Does CVE-2023-52947 have an EU (EUVD) identifier?

Yes. CVE-2023-52947 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59631.

When was CVE-2023-52947 published?

CVE-2023-52947 was published on 2024-09-26 and last updated on 2026-06-17.

CVE-2023-52947

CVE-2023-52947 is a medium-severity vulnerability in Synology Active Backup For Business Agent with a CVSS 3.x base score of 4.0. 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-306.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-59631
Weakness: CWE-306
Affected product: Synology Active Backup For Business Agent
Published: 2024-09-26
Last modified: 2026-06-17

Description

Missing authentication for critical function vulnerability in logout functionality in Synology Active Backup for Business Agent before 2.6.3-3101 allows local users to logout the client via unspecified vectors. The backup functionality will continue to operate and will not be affected by the logout.

Frequently asked questions

What is CVE-2023-52947?: Missing authentication for critical function vulnerability in logout functionality in Synology Active Backup for Business Agent before 2.6.3-3101 allows local users to logout the client via unspecified vectors. The backup functionality will continue to operate and will not be affected by the logout.
How severe is CVE-2023-52947?: CVE-2023-52947 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-52947 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52947?: CVE-2023-52947 affects Synology Active Backup For Business Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52947?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-52947 have an EU (EUVD) identifier?: Yes. CVE-2023-52947 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59631.
When was CVE-2023-52947 published?: CVE-2023-52947 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_11

Affected products (1)

cpe:2.3:a:synology:active_backup_for_business_agent:*:*:*:*:*:*:*:*

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