Answer in brief
CVE-2018-19953 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.4.2.1231 | 4.4.2.1231 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.4.1.1201 | 4.4.1.1201 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.6.1218 | 4.3.6.1218 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.4.1190 | 4.3.4.1190 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.3.1161 || >=unspecified <4.2.6 | 4.3.3.1161, 4.2.6 |
Published upstream
Oct 28, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
May 24, 2022
Evidence: source:kev:kev:kev:recordIf 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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2018-19953 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QTS (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.4.2.1231 | 4.4.2.1231 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.4.1.1201 | 4.4.1.1201 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.6.1218 | 4.3.6.1218 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.4.1190 | 4.3.4.1190 |
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.3.1161 || >=unspecified <4.2.6 | 4.3.3.1161, 4.2.6 |
Published upstream
Oct 28, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
May 24, 2022
Evidence: source:kev:kev:kev:recordIf 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.
Quoted source text, attributed separately from HOL analysis.