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CVE-2018-19949

79
FAUCET Score

CVE-2018-19949 is a critical command injection vulnerability affecting QNAP QTS network-attached storage (NAS) devices. This flaw allows remote, unauthenticated attackers to execute arbitrary commands on affected systems. With a CVSS score of 9.8 (Critical), it poses a significant risk due to its low attack complexity and complete compromise potential (confidentiality, integrity, and availability). This vulnerability is actively exploited, notably in eCh0raix ransomware campaigns, and has garnered considerable community and media attention. QNAP has released patches for various QTS versions to address this issue.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.2.6CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
>= 4.3.1.0013, < 4.3.3.1161CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
>= 4.3.4, < 4.3.4.1190CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
>= 4.3.6, < 4.3.6.1218CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
>= 4.4.0, < 4.4.1.1201CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
24.45%
Probability of exploitation in next 30 days
EPSS Percentile
97.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Added to KEV · May 24, 2022
This CVE's current EPSS score of 0.2445 is in the 94th percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
qnap.com / zh-tw/security-advisory/qsa-20-01
Vendor Advisory