CVE-2024-50388

ENISA EUVD: EUVD-2024-45184 ↗
✓ Confirmed 0-Day
Triaged: March 5, 2026 4 articles Published: 2024-12-06
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗

EPSS Score

Source: FIRST.org · 2026-05-23
7.93%
probability
This CVE has a 7.93% probability of being exploited in the next 30 days.
0% Top 92.1th percentile of all CVEs 100%

CVSS v4.0 NEW

Source: VulnerabilityLookup (CIRCL)
9.5
CRITICAL
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vulnerable System Confidentiality Impact
High
Vulnerable System Integrity Impact
High
Vulnerable System Availability Impact
High
Subsequent System Confidentiality Impact
High
Subsequent System Integrity Impact
High
Subsequent System Availability Impact
High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS v3.1

Source: NVD
9.8
CRITICAL
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

VulnerabilityLookup (CNA)
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

Affected Products

QNAP Systems Inc.
HBS 3 Hybrid Backup Sync
25.1.x

Signal Intelligence

Confidenceⓘ
92%
EPSS 7.93%
CVSS v4.0 9.5
CVSS v3.1 9.8
Mentions 4
Last Seen Nov 07, 2025

CNA Information

CNA Assigner
qnap
CNA Title
HBS 3 Hybrid Backup Sync

Analyst Note

CVE-2024-50388 was explicitly identified as a zero-day exploited at Pwn2Own 2024 (a live hacking competition). Multiple authoritative sources (BleepingComputer, CERT-EU) confirm zero-day exploitation, and QNAP released patches (v25.1.1.673+) in response to active exploitation at the event in December 2024, demonstrating exploitation preceded or coincided with patch availability.

Threat Actors 2

Hacking Team
apt_group 🇮🇹 IT
Mana Team
apt_group 🇨🇳 CN

Triage Info

Decided atMar 05, 2026
Published DateDec 06, 2024