CVE-2018-19953
Summary
| CVE | CVE-2018-19953 |
|---|---|
| State | PUBLISHED |
| Assigner | qnap |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2020-10-28 18:15:12 UTC |
| Updated | 2026-08-13 05:17:17 UTC |
| Description | If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code. 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. |
Risk And Classification
Primary CVSS: v3.1 6.1 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.238940000 probability, percentile 0.976560000 (date 2026-08-22)
CISA KEV: Listed on 2022-05-24; due 2022-06-14; ransomware use Known
Problem Types: CWE-79 | CWE-80 | CWE-79 CWE-79 Cross-site Scripting (XSS) | CWE-80 CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 6.1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 3.1 | ADP | DECLARED | 6.1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 6.1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 2.0 | [email protected] | Primary | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
NoneIntegrity
PartialAvailability
NoneAV:N/AC:M/Au:N/C:N/I:P/A:N
CISA Known Exploited Vulnerability
| Vendor | QNAP |
|---|---|
| Product | Network Attached Storage (NAS) |
| Name | QNAP NAS File Station Cross-Site Scripting Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2018-19953 |
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | QNAP Systems Inc. | QTS | affected unspecified 4.4.2.1231 custom | build 20200302 |
| CNA | QNAP Systems Inc. | QTS | affected unspecified 4.4.1.1201 custom | build 20200130 |
| CNA | QNAP Systems Inc. | QTS | affected unspecified 4.3.6.1218 custom | build 20200214 |
| CNA | QNAP Systems Inc. | QTS | affected unspecified 4.3.4.1190 custom | build 20200107 |
| CNA | QNAP Systems Inc. | QTS | affected unspecified 4.3.3.1161 custom | build 20200109 |
| CNA | QNAP Systems Inc. | QTS | affected unspecified 4.2.6 custom | build 20200109 |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| Multiple Vulnerabilities in File Station - Security Advisory | QNAP | af854a3a-2127-422b-91ae-364da2661108 | www.qnap.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
Vendor Comments And Credit
Discovery Credit
CNA: Independent Security Evaluators (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2022-05-24T00:00:00.000Z | CVE-2018-19953 added to CISA KEV |
Legacy QID Mappings
- 731240 QNAP QTS Multiple Security Vulnerabilities (QSA-20-01)