CVE-2018-19949

CRITICAL

9.8

CVSS Score

Published: October 28, 2020 at 05:55 PM UTC

Updated: October 2, 2026 at 04:17 AM UTC

1 product affected across 1 vendorQTS

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Severity

CRITICAL9.8

Exploitation

CISA KEV

Exploit prediction

EPSS 30%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score30.2%

EPSS (Exploit Prediction Scoring System) estimates a 30.2% chance this CVE is exploited in the wild within the next 30 days — higher than 98% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

A command injection vulnerability affecting QNAP NAS File Station could allow remote attackers to run commands.

Required Action

Apply updates per vendor instructions.

Ransomware Use

Known

Added to KEV

May 24, 2022

Remediation Due

Jun 14, 2022

1597 days overdue

Notes

https://nvd.nist.gov/vuln/detail/CVE-2018-19949

Description

If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. QNAP has already fixed the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; QTS 4.3.6.1218 on build 20200214; QTS 4.3.4.1190 on build 20200107; QTS 4.3.3.1161 on build 20200109; QTS 4.2.6 on build 20200109.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

QTS · Qnap

95%

v < 4.2.6v < 4.3.3.1161v < 4.3.4.1190v < 4.3.6.1218v < 4.4.1.1201v < 4.4.2.12314.3.1.0013 ≤ v < 4.3.3.11614.3.4 ≤ v < 4.3.4.11904.3.6 ≤ v < 4.3.6.12184.4.0 ≤ v < 4.4.1.12014.4.2 ≤ v < 4.4.2.12314.2.6 4.2.6 build_20170517 4.2.6 build_20190322 4.2.6 build_20190730 4.2.6 build_20190921 4.2.6 build_20191107

Affected range stops below 4.2.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.3.3.1161, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.3.4.1190, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.3.6.1218, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.4.1.1201, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.4.2.1231, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.qnap.com/zh-tw/security-advisory/qsa-20-01

References (2)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://www.qnap.com/zh-tw/security-advisory/qsa-20-01

US Government Resource

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19949

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-20CWE-77CWE-78

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