CVE-2017-7876

CRITICAL

This command injection vulnerability in QTS allows attackers to run arbitrary commands in the compromised application. QNAP have already fixed the issue in QTS 4.2.6 build 20170517, QTS 4.3.3.0174 ...

Affects 1 product across 1 vendor.

BCS7.83
CVSS 3.110.0
EPSS3.3%
Percentile87th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, can impact systems beyond the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-77: Command Injection

Attacker injects operating system commands through application inputs passed to a shell or system call.

Related Attack Patterns (CAPEC)
CAPEC-43 Exploiting Multiple Input Interpretation Layers
via CWE-77
CAPEC-76 Manipulating Web Input to File System Calls
via CWE-77
CAPEC-15 Command Delimiters
via CWE-77
CAPEC-40 Manipulating Writeable Terminal Devices
via CWE-77
CAPEC-75 Manipulating Writeable Configuration Files
via CWE-77
Show all 8
via CWE-77
via CWE-77
via CWE-77

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ SAGE Intelligence — CITED Relevance Research Team

This vulnerability was disclosed in 2017. A critical vulnerability affects Qnap systems (CVE-2017-7876). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2017-GLOBAL-121181-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2017-7876?
This vulnerability was disclosed in 2017. A critical vulnerability affects Qnap systems (CVE-2017-7876). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2017-7876?
CVE-2017-7876 has CVSS 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. EPSS: 3.3%.
Is CVE-2017-7876 actively exploited?
No confirmed active exploitation of CVE-2017-7876 as of 2026-05-30.
How do I remediate CVE-2017-7876?
Priority: MEDIUM.
What systems are affected by CVE-2017-7876?
CVE-2017-7876 affects: Qnap.
Vulnerability Details
CVE IDCVE-2017-7876
BSIDBS-2017-GLOBAL-121181-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published2017-06-15
Last Modified2026-05-13
ICS Relevance70%
Weakness (CWE)
Command Injection
SourceNVD
Official Description

This command injection vulnerability in QTS allows attackers to run arbitrary commands in the compromised application. QNAP have already fixed the issue in QTS 4.2.6 build 20170517, QTS 4.3.3.0174 build 20170503 and later versions.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: This command injection vulnerability in QTS allows attackers to run arbitrary commands in the compromised application. QNAP have already fixed the issue in QTS 4.2.6 build 20170517, QTS 4.3.3.0174 build 20170503 and later versions. CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Exploitation Likelihood: LOW

Affected Products
VendorProductFixed Version
Qnap Qts —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: August 2026 | Threat Age: 3338 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash816aedf7e28af49c68a9f3240ce6a8bc97197794b07d36e317b5f0fc4098314a663c070f1d302716507ce2f2b3ac9325838b15dccb52703861449b08cda0da01
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