What it is
CVE-2023-50358 is an unauthenticated QTS, QuTS hero, QuTScloud. An OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow...
Vulnerability report
Exploited in the wild
High confidence
Not in CISA KEV
CVE-2023-50358
QTS, QuTS hero, QuTScloud
QNAP Systems Inc. / QTS · affected before 5.1.5.2645 build 20240116
- Severity
- CVSS 5.8 · Medium
- Confidence
- High
- Exploit status
- Exploited in the wild
- EPSS
- 13.5%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.
Who is affected?
QNAP Systems Inc. / QTS affected before 5.1.5.2645 build 20240116.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
An OS command injection vulnerability has been reported to affect several QNAP operating system versions
An OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to execute commands via a network.
We have already fixed the vulnerability in the following versions: QTS 5.1.5.2645 build 20240116 and later QTS 4.5.4.2627 build 20231225 and later QTS 4.3.6.2665 build 20240131 and later QTS 4.3.4.2675 build 20240131 and later QTS 4.3.3.2644 build 20240131 and later QTS 4.2.6 build 20240131 and later QuTS hero h5.1.5.2647 build 20240118 and later QuTS hero h4.5.4.2626 build 20231225 and later QuTScloud c5.1.5.2651 and later
Vendor
Product
Affected
Status
QNAP Systems Inc.
QTS
Before 5.1.5.2645 build 20240116
Affected
QNAP Systems Inc.
QTS
Before 4.5.4.2627 build 20231225
Affected
QNAP Systems Inc.
QTS
Before 4.3.6.2665 build 20240131
Affected
QNAP Systems Inc.
QTS
Before 4.3.4.2675 build 20240131
Affected
QNAP Systems Inc.
QTS
Before 4.3.3.2644 build 20240131
Affected
QNAP Systems Inc.
QTS
Before 4.2.6 build 20240131
Affected
QNAP Systems Inc.
QuTS hero
Before h5.1.5.2647 build 20240118
Affected
QNAP Systems Inc.
QuTS hero
Before h4.5.4.2626 build 20231225
Affected
QNAP Systems Inc.
QuTScloud
Before c5.1.5.2651
Affected
- Published
- 13 Feb 2024
- Exploitation Reported
- 26 Oct 2025
- Attack vector
- Adjacent
- Complexity
- High
- Privileges
- None
- User interaction
- None
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-50358
- qnap.com/en/security-advisory/qsa-23-57 qnap.com · CVE Record https://www.qnap.com/en/security-advisory/qsa-23-57
- unit42.paloaltonetworks.com/qnap-qts-firmware-cve-2023-50358 unit42.paloaltonetworks.com · CVE Record https://unit42.paloaltonetworks.com/qnap-qts-firmware-cve-2023-50358/
- bsi.bund.de/SharedDocs/Cybersicherheitswarnungen/DE/2024... bsi.bund.de · CVE Record https://www.bsi.bund.de/SharedDocs/Cybersicherheitswarnungen/DE/2024/...
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
The Shadowserver
Independent exploitation attestation added to the KEV Intelligence record.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2025-10-26 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
5.8
Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
EPSS
13.5%
Timeline
From disclosure to observed exploitation
-
Added to KEV Intelligence KEV Feed
High-confidence, third-party attested exploitation
-
CVE published
Vulnerability disclosed publicly
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2023-50358
Free JSON includes basic KEV fields{
"cve_id": "CVE-2023-50358",
"confidence": "High",
"cvss_score": 5.8,
"cvss_estimated": false,
"epss_score": 0.13523,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.