Answer in brief
CVE-2018-19953 records a High severity (CVSS 6.1) 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.
CVSS is 6.1. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20170517:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20190322:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20190730:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20190921:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20191107:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.3.1161 || >=unspecified <4.2.6 | 4.3.3.1161, 4.2.6 |
| 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 |
Published upstream
Oct 28, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 13, 2026
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 (CVSS 6.1) 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.
CVSS is 6.1. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20170517:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20190322:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20190730:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20190921:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:qnap:qts:4.2.6:build_20191107:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| QNAP Systems Inc./QTSgeneric | >=unspecified <4.3.3.1161 || >=unspecified <4.2.6 | 4.3.3.1161, 4.2.6 |
| 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 |
Published upstream
Oct 28, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 13, 2026
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.