How severe is CVE-2024-50388?

CVE-2024-50388 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-50388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-50388?

CVE-2024-50388 affects Qnap Hybrid Backup Sync. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-50388?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-50388 have an EU (EUVD) identifier?

Yes. CVE-2024-50388 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45184.

When was CVE-2024-50388 published?

CVE-2024-50388 was published on 2024-12-06 and last updated on 2026-06-17.

CVE-2024-50388

CVE-2024-50388 is a critical-severity vulnerability in Qnap Hybrid Backup Sync with a CVSS 3.x base score of 9.8. 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-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-45184
Weakness: CWE-77
Affected product: Qnap Hybrid Backup Sync
Published: 2024-12-06
Last modified: 2026-06-17

Description

An OS command injection vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to execute commands. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 25.1.1.673 and later

Frequently asked questions

What is CVE-2024-50388?: An OS command injection vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to execute commands. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 25.1.1.673 and later
How severe is CVE-2024-50388?: CVE-2024-50388 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-50388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-50388?: CVE-2024-50388 affects Qnap Hybrid Backup Sync. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-50388?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-50388 have an EU (EUVD) identifier?: Yes. CVE-2024-50388 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45184.
When was CVE-2024-50388 published?: CVE-2024-50388 was published on 2024-12-06 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-24-41

Affected products (1)

cpe:2.3:a:qnap:hybrid_backup_sync:25.1.0.627:*:*:*:*:*:*:*

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